SKU: 37884102457

Keychron K3 Max Ultra-Slim Wireless 75% Mechanical Keyboard, QMK/VIA, Gateron Brown

Sale price$989.06 Regular price$1098.95
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Description

Keychron K3 Max Ultra-Slim Wireless 75% Mechanical Keyboard, QMK/VIA, Gateron BrownThe Keychron K3 Max QMK VIA Low Profile Wireless Custom Mechanical Keyboard is an ultra slim 75% compact mechanical keyboard designed for maximum versatility and efficiency. Supporting 2. 4 GHz, Bluetooth 5. 1, and USB Type C wired connectivity, it seamlessly adapts to various work and gaming environments. Users can take full control of their setup using the Keychron Launcher web app, which enables key remapping, macros, and custom commands with ease.

The Keychron K3 Max QMK/VIA Low Profile Wireless Custom Mechanical Keyboard is an ultra-slim 75% compact mechanical keyboard designed for maximum versatility and efficiency. Supporting 2.4 GHz, Bluetooth 5.1, and USB Type-C wired connectivity, it seamlessly adapts to various work and gaming environments. Users can take full control of their setup using the Keychron Launcher web app, which enables key remapping, macros, and custom commands with ease. The LSA (low-profile spherical-angled) keycaps are designed for both Windows and macOS, ensuring a smooth typing experience right out of the box.

Designed for fast-paced gaming and professional multitasking, the K3 Max features a 1000Hz polling rate in both 2.4GHz and wired modes, minimizing input lag for near-instant responsiveness. The Gateron Low Profile Brown switches offer a tactical, pre-lubed feel, delivering responsive keystrokes with medium sound levels, making them ideal for Midway office work and gaming. The keyboard’s hot-swappable version allows users to customize their typing experience without soldering, making it easier than ever to swap switches for a personalized feel.

Powered by QMK/VIA firmware, the K3 Max provides extensive customization options for power users. The ARM Cortex-M4 32-bit MCU with 256KB Flash ensures stable performance, while the IXPE acoustic foam dampens keystroke sounds, creating a quieter and more comfortable typing experience. Additionally, redesigned stabilizers help reduce key wobble, especially on larger keys like the space bar, Shift, Enter, and Backspace, ensuring greater accuracy and consistency. For Mac users, the dedicated macOS layout replicates the Apple keyboard function keys, making it a seamless transition for Apple enthusiasts.

Aesthetically, the K3 Max combines functionality with style, featuring double-shot PBT keycaps for enhanced oil resistance and durability. With 22 RGB backlight effects (plus a white backlight option), users can further fine-tune brightness, hue, and effect speed for a fully immersive experience. The 1550mAh battery provides up to 73 hours of wireless use with backlight off and 42 hours with RGB at its lowest brightness, ensuring long-lasting wireless performance. Compact, powerful, and highly customizable, the Keychron K3 Max sets a new benchmark for low-profile mechanical keyboards.

FEATURES:

  • Customisable keyboard with 75% layout
  • 2.4GHz & Bluetooth connection
  • QMK/VIA Support
  • Double-shot PBT keycaps
  • Ultra-slim design
  • Hot-swappable
  • RGB LED lights
  • Low profile Gateron Low Profile BROWN switches
  • Acoustic foam

SPECIFICATIONS:

Colour Black
Number of Keys 84 (75%)
Switches Gateron low-profile mechanical
Switch Face North-facing
Number of Multimedia Keys 12
Frame Material ABS + Aluminium frame
Keycap Material Low-profile double-shot PBT
Layout ANSI
Polling Rate (2.4GHz and Wired Mode) 1000Hz
Polling Rate (BT Mode) 90Hz
N-Key Rollover (NKRO) Yes for both wireless and wired modes
Backlit 22 types of RGB backlight options plus endless possibilities
Battery 1550mAh rechargeable li-polymer battery
Wireless Working Time (Backlit off) Around 73 hours (Lab test result may vary by actual use)
Wireless Working Time (RGB) Around 42 hours (Lowest brightness)
Connection 2.4GHz / Bluetooth / Type-C wired
Bluetooth version 5.1
Bluetooth Device Name Keychron K3 Max
Compatible System macOS / Windows / Linux
Typing Angle 2.5º, 4.2º and 6.5º
MCU ARM Cortex-M4 32-bit STM32F402 (256KB Flash)
Operating Environment -10 to 50℃
Gateron Low Profile BROWN Switch Operating force: 55 ± 15 gfPre-travel: 1.7 ± 0.4mmTravel distance: 3.0 ± 0.2mmBehavior: TactilePre-lubed: YesSound level: MediumSuitable for: Midway Office/gaming
Operating force 55 ± 15 gf
Pre-travel 1.7 ± 0.4mm
Travel distance 3.0 ± 0.2mm
Behavior Tactile
Pre-lubed Yes
Sound level Medium
Suitable for Midway Office/gaming
Product Dimensions 30.6 x 11.6 x 1.7~2.2 cm
Product Weight 525g

WHAT’S IN THE BOX:

  • Keychron K3 Max QMK/VIA Low Profile Wireless Custom Mechanical Keyboard | BROWN Switches – Black x1
  • Type-A to Type-C Cable x1
  • Extension Adapter for Receiver x1
  • Type-A 2.4GHz Receiver x1
  • Keycap & Switch Puller x1
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 37884102457

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4.2 ★★★★★
Based on 23 reviews
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Product Reviews
A
Verified Purchase
Ander Anthony
Lexington, US
★★★★★ 5
9.8/10, would buy again!
Number of Items: 1
I bought this mouse in Sept 2020 and it's been absolutely fantastic. Only now, 5 YEARS later, and under extremely heavy usage in both work and gaming pretty much every day, has it started to wear out and develop an issue with the left click button. Most mice don't last anywhere near that long under the same conditions but this thing was a freaking soldier! Pros: Vertical angle - this is the main reason to buy this mouse and I did notice after extended use sessions, significantly less strain on my wrist at the end of the day/night. FYI I also have a wrist wrest on my mouse pad to fully maximize this benefit. The 57 degree angle felt really good to me and didn't inhibit my usage or performance in any way. Build Quality - Solidly built to handle the needs of the most demanding power users. Battery - The battery life lasts a super long time and it warns you when its getting low, plus you can still use it while its plugged it and charging. Charging time is fast and I haven't noticed any significant drop in battery lifetime over many charge/discharge cycles. Sensor - The DPI is high enough for gaming and also variable enough that you can lower it with a single button push to allow a 'normie' to use it when needed. Doesn't require a larger initial movement to begin tracking, making very fine and intermittent adjustments possible. Scroll Wheel - Each single 'tick' of the scroll wheel is soft enough that if you need to scroll a lot you can make it go several at a time easily for faster scrolling. Also its completely silent when scrolling slowly. Coating/Materials - The rubber grip is nice and not difficult to clean with a good spray and a microfiber cloth. The glide coating on the bottom held up very well and it still slides across the pad smooth as butter. The buttons have a matte texture to them that feels premium, which held up fairly well to being worn down. Weight - Well balanced, not too heavy, not too light. It's not adjustable like some high end gaming mice but tbh it doesn't really need adjusting anyway. Bells and Whistles - The multi device sync also works flawlessly and connects to the other devices very quickly when you switch with the button on the bottom. I never got to playing around with 'Flow'. Software - Come free of any bloatware extras and doesn't appear to consume any more system resources than it needs to while running in the background. Cons: The price maybe? You could easily spend more than this on a mouse and end up with an inferior product. ~$90 every five years isn't terribly unreasonable for something that works this well for >8 hours a day every day. If you don't clean it regularly the coating can get a bit oily after a while, and you pretty much have to use a microfiber cloth as nothing else leaves it clean. Sometimes on a hot day it can leave your hand getting a bit sweaty, not because the mouse produces any heat (it doesn't) but because the grippy coating will absorb warmth from your hand and hold on to it for a bit. Maybe the texture on the main buttons could be a little more wear resistant. Eventually I wore off a small fingerpad sized spot on the left click button and that super smooth bit of plastic ends up feeling kind of oily even though its clean. Final thoughts: 9.8/10, would buy again. The only thing I really wish this had was the ability to adjust the vertical angle. After some very long use sessions being able to switch to a slightly shallower angle would help to reduce the eventual strain even further. And if we're shooting for the moon here, I'd love it if you could swap out the outer body to a ventilated/open style body like GravaStar's mice to keep your hand from ever getting sweaty.
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Reviewed in the United States on August 4, 2025
C
Verified Purchase
Chris Hardwick
Belleville, US
★★★★★ 5
Works flawlessly for drafting use...
Color: Black, Style: Wireless, Pattern Name: Mouse
This mouse has been a great upgrade for my setup. The wireless connection is fast and reliable, and I honestly can’t tell the difference from a wired mouse. The sensor is very responsive, and everything feels smooth and precise, especially combined with the Logitech G mouse pad. I actually use this all day at work for drafting, so precision and comfort really matter, and this mouse delivers on both. I’ve even purchased several more for my drafting team, and everyone has been really happy with it. I also like the customizable weight system—you can adjust it to feel just right in your hand. Overall it feels solid, well made, and comfortable for long hours of use.
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Reviewed in the United States on March 17, 2026
D
Verified Purchase
DANIEL A LIZARRAGA V
Phoenix, US
★★★★★ 5
This is the last mouse you will ever buy
Color: Black, Style: Wireless, Pattern Name: Mouse
Just buy it. What can be said about this mouse that hasn't been said before? This is the perfect mouse, there is no contest. I know it is a bit on the pricier side, but if you need a mouse, just get the cheapest one you can get and start saving to get this one, IT'S THAT GOOD. The mouse glides over any decent mouse pad, you don't need to get a Logitech one. The shape is perfect for all kinds of grips and the weight system is great for customization. The led has different brightness levels, including turning it off completely to save more battery, and the keys are just silent and satisfying to press. Again, this is the best mouse ever, no other mouse will offer a better value for your money than this one. A bit steep, yes, but worth it.
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Reviewed in the United States on March 20, 2026
A
Verified Purchase
Aaron Grinnell
Cuba, US
★★★★★ 5
One of the best mice I've ever owned
Color: Black, Style: Wireless, Pattern Name: Mouse
I was a little skeptical about this mouse but after 3 weeks of use it's continued to be my favorite mouse. Not only does it. Have a good feel. It is very durable and customizing. The weight is fantastic. If you get the charging pad it just glides. But is definitely worth its money
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Reviewed in the United States on April 19, 2026
W
Verified Purchase
William Garber
Birmingham, US
★★★★★ 5
Impressive and Comfortable
Color: Black, Style: Wireless, Pattern Name: Mouse
Only after a couple play sessions in BF6 with this mouse, I can already feel how much more precise I can be with it. My first play session was a bit rough getting used to the feel of it. It’s quickly getting more natural. I switched from a ghost keyboards m1 mouse to this. The left and right mouse clicks feel a bit more stiff than my m1 mouse which I like. Easier to avoid accidental inputs. All the other buttons feel solid with clean clicks. The mouse wheel is a very different feel with more significant bumps while scrolling, but it adds a more tactile feel being easier to control. It also has a release that lets it just spin for probably more work type use rather than gaming. It’s easy to setup, basically plug and play but a bit confusing. It comes with of course, a charging cable but the Bluetooth usb comes in some sort of housing that plugs in by the charging cable. Not sure if that is better or worse than how I have it now which is the usb receiver plugged into the back of my pc. Works fine. Looking at the Logitech website shows up to 48 hours of battery life with default lighting, or up to 60 hours with no lighting. Fully charged it showed 26 hours (25 hours now at 96%). And turning off the lighting at 96% only goes up to 28 hours. Which is plenty as I usually plug my wireless device in to charge after use. My favorite part of this mouse is how comfortable it is. It’s a bit thicker filling in my smaller hands more compared to my m1 mouse. Another nice added comfort feature is the thumb ledge. It keeps my thumb off my mouse pad, and helps with control of the mouse in high stress fps situations. The weight also help in precise aiming. My m1 mouse was 65g , the g502 is 111g plus the 1 big weight and 2 smaller weights I added making it go up to maybe 119g. Highly recommend this mouse, and will try to update if it fails prematurely.
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Reviewed in the United States on November 22, 2025

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