Cyber Tough for serious protection
Cloud for a soft, cozy grip
Classic Hybrid for keeping original iPhone feel
Atelier for a more premium leather touch
Always find a choice in ESR.
Hi fam! It's ESR, a global tech brand here to make using your smart devices easier with designed accessories.
We believe you may have already seen our beta tester recruitment (The list has been announced in the comments!), where we shared that we’re preparing to launch a leather case.
Over the past year, we’ve received a lot of requests from the community for a more premium leather option. That’s why we’ve been deeply exploring how to bring high-quality leather materials into real everyday use scenarios, not just for looks, but for how people actually carry, work, and create with their devices. We tested multiple materials, refined durability, and studied how the case would perform in daily routines.
So today, we’re introducing the ESR Atelier Magnetic Case to share the results of our research into a more premium material experience, combining a refined leather feel with practical functionality designed for modern workflows.
✨ Premium Look, Soft Touch
Crafted with premium soft vegan leather and an artisan-level embossing process, the Atelier Magnetic Case is designed to deliver both a refined visual texture and a smooth, comfortable hand feel. The clean, consistent leather grain adds a more polished look to your everyday carry, while the soft-touch surface makes it comfortable to hold throughout the day.
Premium in appearance, joyful in hand.
🫧Stay premium, effortlessly
The edge soft vegan leather and a refined flattening process make it more resistant to wear and stains compared to traditional PU leather. And to help prevent edge cracking, we added a color-matched or contrasting TPU frame, along with a stain-resistant surface coating for easier daily maintenance.
The result is a smooth, skin-friendly feel, a clean and consistent texture, and a premium look that’s easy to keep.
🛡️ Everyday Protection As Always
We upgraded our signature lens stand into the new Flex Stand, designed for more flexible hands-free viewing, quick video calls, and everyday use. And it still helps protect your camera when you’re on the move, while the case also includes ESR essentials like raised screen protection, hinge protection for foldable models, and strong magnetic attachment with up to 1400g of holding force.
Practical, protective, and ready for real life.
Which color is your favorite? Let us know in the comments 👇
Wireless charging has been improving step by step.
At first, the biggest challenge was simply making wireless charging possible across different devices. Then, as we discussed in our previous Wireless Charging 101 chapters, the industry started solving some of the biggest limitations of wireless charging:
But as wireless charging continues to get faster, a new challenge appears:
This is where Qi2.2 and ESR CryoBoost comes in. Qi2.2 is not just another wireless charging update. It represents the next stage of wireless charging, combining higher charging capability with the efficiency improvements introduced by magnetic alignment. And Cryoboost here, is an active cooling technology designed to help wireless chargers maintain better thermal control and meet the more demanding safety and performance requirements of modern wireless charging standards, including Qi2.2.
So what exactly makes Qi2.2 different, and does it actually matter for your daily charging experience?
Let's take a closer look.
1. Where does Qi2.2 build on?
In our previous chapter, we talked about how magnetic alignment changed wireless charging.
Traditional wireless charging had one major weakness: the charging coils needed to be positioned correctly, but there was nothing actively keeping them aligned. And Qi2 introduced standardized magnetic alignment to solve this problem. By using magnets to automatically position the phone and charger correctly, Qi2 made wireless charging more consistent and efficient.
Qi2.2 builds on this foundation.
Instead of changing how devices connect, Qi2.2 focuses on improving what happens after that connection is established: delivering higher charging capability while maintaining efficient energy transfer.
In simple terms:
Qi2 improved precision.
Qi2.2 improves performance.
2. How does Qi2.2 give the faster charging speed?
The answer is, with a cooling system.
Higher charging power does not automatically mean faster charging in real-world situations. A charger may be able to reach a high peak speed, but if heat builds up too quickly, your phone may reduce charging speed to control temperature.
This creates a cycle:
Higher power → More heat → Thermal protection → Reduced charging speed
That is why thermal management becomes increasingly important as wireless charging gets faster. A good cooling system helps remove excess heat during charging, allowing the charger and phone to maintain better performance over longer charging sessions.
Because of all above, ESR developed CryoBoost around active cooling.
CryoBoost uses a dedicated airflow system to continuously move heat away from the charging area. By helping control temperature during high-power charging, CryoBoost reduces the chance of triggering thermal protection and allows Qi2.2's higher charging capability to be used more effectively.
In other words:
Qi2.2 provides the possibility of faster charging.
CryoBoost helps make that possibility more practical in everyday use.
3. Is Qi2.2 worth buying?
This is probably the question most people actually care about, especially when you're considering to get an upgrade from Qi or Qi2.
And the answer depends on two things: What phone you are using, and what wireless charger you currently have.
A higher charging standard only makes a difference when both your phone and charger are compatible. Different devices can take different advantage of wireless charging speeds:
iPhone 17 Pro Max / 17 Pro / 17: up to 25W with Qi2.2 (with iOS 26 or later)
iPhone Air / 16 Pro / 16: up to 20W with Qi2.2 (with iOS 26 or later)
iPhone 15–12 series: up to 15W with Qi2
Here is some situations:
You probably don't need to upgrade just for speed. These iPhones only support up to Qi2 15W charging and upgrading to Qi2.2 will not suddenly make your phone charge much faster.
However, there is another factor to consider:
Heat.
If your current charger gets noticeably hot, frequently slows down during charging, or struggles to maintain stable power output, a better-designed Qi2.2 charger with advanced cooling can still improve the overall experience.
For example, ESR CryoBoost is designed not only around higher charging capability, but also around thermal management. Its active cooling system helps reduce heat buildup during charging, helping prevent your phone from reducing charging speed due to temperature.
Upgrading to a Qi2.2 charger allows you to actually unlock the higher charging capability your phone supports. Combined with effective thermal management, a Qi2.2 charger can provide faster and more consistent wireless charging during everyday use.
Whether you are using an iPhone or an Android phone, the key question is the same: How much wireless charging power can your phone actually support? A phone that only supports 15W wireless charging will not suddenly charge faster just because you buy a higher-power Qi2.2 charger.
So before upgrading, check:
Then, check the temperatures while you using your wireless charger. Charging speed is not the only reason to upgrade.
Even if your phone does not support the highest Qi2.2 wattage, a better-designed charger can still improve your daily experience if you:
This is where ESR CryoBoost can make a difference. By combining Qi2.2 support with active cooling, CryoBoost is designed to help maintain charging performance by managing heat during longer charging sessions.
That wraps up another chapter of ESR's Wireless Charging 101. In the next chapter, we'll explore another question:
What is CryoBoost, and what problem does it solve?
As always, let us know what wireless charging topics you'd like us to cover next. We’d love to hear what questions come up in real-world use.
Hey fam!
It's us again! ESR, a global tech brand here to make using your smart devices easier with designed accessories.
Missed our last Apple Watch Band beta tester program? Don’t worry, we’re back with another beta testing opportunity! 🎉
This time, we’re looking for testers for our upcoming leather phone case. ESR has always focused on simple, practical designs, but we’ve been receiving lots of request for leather products. So we decided to explore how we could bring the premium feel of leather into our phone case lineup.
Who we're looking for:
What you'll get:
What we'd like beta testers to do:
Use the case in your daily life and share your honest thoughts as a Reddit post in our subreddit (r/ESR_official) or other related subs. We care about the good, the bad, and everything in between.
Interested?
Leave a comment below and tell us: What’s the longest you’ve ever used a phone case, and what made it special?
Important notes:
We'll select 8 testers from the comments! As always, thank you for helping us build better products. ❤️ Good Luck everyone!
Hi fam! It's ESR.
Back to school season is here, and we want to take a little trip down memory lane.
Do you remember when you got your first iPad? Was it your first year of college, a graduation gift, the first electronic work tool you saved up for through part-time jobs, or something else?
Share your story in the comments 👇
When did your first iPad become part of your everyday life?
We’ll randomly pick one community member to receive an ESR iPad Keyboard Case to upgrade their next study/work session.
Good luck, and we can’t wait to hear your iPad stories!
Show us your Apple setup! Would green make the perfect match? 💚
Hi fam! We're ESR.
Made for the way you actually use it. Which one fits the way you use your iPad best?
After days of surveillance and dozens of community reports, ESRPD can now officially confirm the identity of the mysterious magnetic suspect spotted in the wild.
Name: ESR Pulse Lite Magnetic Case
Known aliases: "That colorful case on the subway." "The one with the magnetic lid."
Suspect Profile
Last Seen
To celebrate the case being solved, ESRPD has secured 2 Pulse Lite Magnetic Cases as evidence for community testing. Leave a comment below telling us which color you'd choose and why, and we'll randomly select 2 winners to receive one.
For full product details, please check the product page.
If you've ever shopped for a magsafe charger, you've probably seen labels like:
There are just too many wireless charging terms to keep track of, and they don't always make sense at face value. For an average person trying to buy a wireless charger, having to Google each one separately just to understand what they all mean is far too cumbersome.
So today, let's clear up one of the biggest misconceptions in wireless charging: Qi and MagSafe.
Think of Qi as the language your phone and charger use to communicate. Developed by the Wireless Power Consortium (WPC), Qi defines how wireless power is transferred safely between devices. If both your phone and charger support Qi, they'll be able to charge wirelessly. But Qi itself doesn't tell your phone where to sit on the charger.
That's where MagSafe comes in.
Apple introduced MagSafe with the iPhone 12.
Inside every MagSafe-compatible iPhone is a ring of magnets surrounding the charging coil. A MagSafe charger contains a matching magnetic ring. Instead of placing your phone somewhere that's "close enough," the magnets automatically guide it into the optimal charging position.
It sounds like a small improvement, but it solves one of the biggest challenges in wireless charging. As we talked about in the previous chapter, even a slight coil misalignment can reduce charging efficiency, waste energy, and generate more heat. MagSafe helps keep the coils properly aligned throughout the charging session, making efficient power transfer much easier.
Not by itself. One of the most common misconceptions is that the magnets are what make MagSafe faster.
They don't.
The magnets don't increase charging power. Instead, they help maintain accurate coil alignment, allowing power to transfer more efficiently. That usually means:
In other words, MagSafe improves charging efficiency, not charging power.
You may also come across the label MFM, which stands for Made for MagSafe.
Unlike Qi or MagSafe, MFM isn't a charging technology. It's Apple's certification program for MagSafe accessories. An MFM-certified charger has been tested by Apple to meet its requirements for compatibility, safety, and charging performance. So while Qi is a wireless charging standard and MagSafe is Apple's magnetic alignment system, MFM simply tells you that Apple has officially certified that MagSafe implementation.
For years, magnetic alignment was mostly part of Apple's MagSafe ecosystem. To bring that experience to more devices, the Wireless Power Consortium introduced Qi2, incorporating a standardized magnetic alignment system inspired by MagSafe. So now Android devices can also enjoy fast wireless charging.
The latest evolution is Qi2.2, which continues to build on that foundation while supporting higher charging capabilities on compatible devices.
That's why ESR's latest-generation magsafe charger, the CryoBoost series, invest more to support the Qi2.2 protocol. Combined with precise magnetic alignment and CryoBoost's active cooling system, they're designed to deliver fast, stable charging while keeping heat under control.
We'll take a closer look at what makes Qi2.2 different, and why it's becoming the next step for wireless charging, in the next chapter.
So... Qi or MagSafe? The short answer is:
Qi tells your phone how to charge.
MagSafe helps your phone where to charge.
They're not replacing each other. They're solving different parts of the same wireless charging experience.
As wireless charging continues to evolve, technologies like Qi2 and Qi2.2 are bringing precise magnetic alignment beyond Apple's ecosystem, making wireless charging faster, more reliable, and easier to use across a growing range of devices.
That wraps up another chapter of ESR's Wireless Charging 101.
In our next chapter, we'll dive into Qi2.2 itself: what has actually changed from previous generations, what improvements it brings, and whether it's worth upgrading your current wireless charger.
As always, if there's another wireless charging topic you'd like us to cover, let us know in the comments. We'd love to include it in a future chapter.
We’ve managed to catch it in the wild during commutes.
Other suspects of the same type may also show up in places like study rooms, gyms, and more. They all share the same traits: magnetic locking lid, MagSafe charging support, and bold, eye catching colors. If you spot one of these in the wild, snap a pic and report to us in the comment or DM us. ESRPD will be on the case immediately.
We’re actively investigating this group, full suspect details will be released on June 26. Stay tuned 👀
Passport ✅
Hat ✅
Drinks✅
ESR Cryoboost Foldable 3 in 1 Wireless Charger ✅
Ready for Summer Vacation!!
Hey fam!
It's us again! ESR, a global tech brand here to make using your smart devices easier with designed accessories.
Actually, over the past 2 years, ESR has been working on a brand-new Apple Watch band, and we're finally at the stage where we'd love to get feedback from real users before bringing it to market. From the office to the gym, this band is built to keep up with wherever the day takes you.
From past beta testing programs, we received so many great and valuable feedback. Community members helped us improve the weight distribution of the Shift Case, strengthen the ring on our MagSafe Wallet, and refine countless smaller details that might otherwise have been overlooked. That’s why our first thought was to come back to our fam community.
Leave a comment below and tell us:
Important notes:
We'll select 8 testers from the comments!
As always, thank you for helping us build better products. ❤️ Good Luck everyone!
I mean, let’s be honest, it’s not exactly easy to hang an iPhone 17pro on a clothesline.
If you’ve ever shopped for a wireless charger, especially one that isn’t exactly cheap, you’ve probably done the same thing most of us do:
open the product page and start reading every feature line by line, trying to figure out what’s actually worth paying for.
And somewhere along the way, you’ve probably seen terms like active cooling and passive cooling. They sound important and technical. But… what do they actually mean? And more importantly, do they make any real difference in everyday use?
In the previous section, we talked about why heat is an unavoidable byproduct of wireless charging. Energy loss during charging eventually becomes heat, which is why phones often warm up on a wireless charger, especially during fast charging. That’s also why better wireless chargers don’t just focus on charging speed. They also spend a lot of engineering effort on thermal management.
This is where cooling systems come in. Many premium wireless chargers now include some form of built-in cooling to help control temperature during charging. So in today’s Wireless Charging 101, let’s break down the difference between the active cooling and passive cooling.
At the simplest level, both systems are trying to solve the same problem: remove excess heat during charging.
They just do it in different ways.
Active cooling removes heat with moving airflow.
Passive cooling absorbs or transfers heat through direct contact.
In wireless chargers, active cooling usually means a fan-based system. A built-in fan keeps air moving around the charger and the back of the phone, helping carry heat away continuously while charging.
Passive cooling often refers to semiconductor cooling (also known as Peltier cooling). A cooling plate lowers the temperature of the charger’s contact surface, and heat from the phone transfers into that cooler surface through thermal conduction.
This is where the difference tends to feel more noticeable. With semiconductor cooling, cooling happens through surface contact. The module cools the area touching the phone first, then heat gradually transfers from the phone into that cooler area.
Because of that, performance can vary depending on things like:
That means cooling speed can feel less predictable and less consistent.
With fan-based active cooling, airflow starts working immediately once charging begins. Instead of waiting for heat to move through a contact surface, air is constantly moving around the charger and phone to help pull heat away. And with CryoBoost, that airflow is directed through ESR’s patented fully open duct system to keep cooling stable throughout the charging session.
One common assumption is that passive cooling is always quieter because it doesn’t appear to rely on airflow.
But in practice, it’s a bit more complicated. Semiconductor modules can cool the phone-facing surface, but they also generate heat on the opposite side while operating. That heat still needs to be dissipated somewhere inside the charger. Because of this, many semiconductor-based chargers also include internal fans to cool the module itself and manage internal heat buildup.
So depending on the design, both active and passive systems may involve airflow and fan noise, the difference is where cooling happens, and how the overall system handles heat.
For CryoBoost, ESR built the cooling system around airflow from the beginning. It uses a laptop-grade fan to move heat away from both the charger and the phone as efficiently as possible. At the same time, the fan is tuned to stay below 25 dB, so in everyday use it stays subtle enough to blend into the background on a desk or nightstand.
This is probably the least talked-about part of cooling design, but it matters.
With some semiconductor cooling chargers, rapid temperature drop on the cooling surface can create condensation. If the cooled surface falls below the dew point of the surrounding air, moisture in the air can collect on:
This is the same reason a cold drink “sweats” on a humid day. In some environments, especially warm and humid ones, this can introduce potential long-term safety concerns.
Fan-based cooling doesn’t have this issue. Because it cools by moving air and carrying heat away rather than sharply lowering the contact surface temperature, there’s no condensation forming on the charger or phone surface.
That makes performance easier to keep consistent across different climates and everyday charging environments.
Photo shared by a member of r/esr_official
When developing CryoBoost, we looked closely at both approaches, including semiconductor cooling.
And the truth is: both can work. Each has its own strengths, limitations, and engineering challenges.
After testing across cooling performance, charger thickness, noise, charging efficiency, and long-term safety, we chose to build CryoBoost around active fan cooling as the most balanced solution for the way people use wireless chargers every day.
For us, it offered the strongest balance between:
However, cooling technology keeps evolving, and we’re continuing to explore new approaches as it develops. But based on where the technology is today, fan-based active cooling remains the solution we felt delivered the best overall balance for daily wireless charging.
That’s it for today’s Wireless Charging 101. In the next chapter, we’re getting into another topic that causes a lot of confusion: what’s the difference between MFM and Qi, and what do those labels actually mean when choosing a charger?
If there’s anything else about wireless charging you’ve been wondering about, drop it in the comments. We’re always curious what questions come up in real-world use, and we’d be happy to dive into them in a future post.
Hi fam!
It’s ESR, a global tech brand here to make using your smart devices easier with thoughtfully designed accessories.
Summer is here ☀️ and we felt it’s the perfect time to bring in some fresh new energy. So we’ve launched new SUMMER COLLECTION for our iPhone 17&17pro Hybrid Case.
As always, the Hybrid Case is built to balance everyday protection with a clean profile, now in colors that feel a bit more… summer-ready.
Yes, as always, we’re giving away a few Hybrid Cases in the new colors!
Join r/ESR_official on Reddit and tell us in the comments:
What’s your go-to “summer moment”? (travel, beach days, road trips, or just staying cool indoors 😄)
We’ll be picking two lucky users from the comments to win a free iPhone 17 Hybrid Case summer collection.
Terms:
Thanks for being part of the ESR community, and good luck! 🍀☀️
Mark your calendars: May 25.
