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USA Keychron K3 Max BT and 2.4G QMK RGB Tactile Ultra-slim Aluminium Mac/PC 75% Keyboard


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Keychron K3 Max is an ultra-slim wireless custom mechanical keyboard. It supports 2.4 GHz, Bluetooth, and a wired connection. It allows anyone to master any keys or macro commands on its 75% compact layout through VIA and QMK. It has LSA (low profile spherical-angled) profile keycaps and additional keycaps for both Windows and macOS.

£99.00 (£82.50 ex VAT) 

USA Keychron K3 Max BT and 2.4G QMK RGB Tactile Ultra-slim Aluminium Mac/PC 75% Keyboard - K3M-B3-USA

2.4 GHz & Bluetooth Connection
Experience peak gaming performance on the fly with the 2.4 GHz wireless connection boasting a rapid 1000 Hz polling rate. For seamless multitasking across your computer, phone, and tablet, you can effortlessly connect the K3 Max via Bluetooth 5.1 to three devices.

The innovative low-profile Gateron switch is 31% slimmer than conventional normal profile switches makes the aluminum body K3 Max one of the thinnest wireless mechanical keyboards in the world. While still delivering a distinguished tactile response.

Program with QMK & VIA
QMK/VIA means endless possibilities for a fluid workflow. Thanks to our engineering team, it's the first time in history that a wireless mechanical keyboard has these kinds of capabilities right out of the box.
Simply connect the K3 Max to your device with a cable, drag and drop your favorite keys or macro commands to remap any key you want on any system (macOS, Windows, or Linux).
ARM Cortex-M4 32-bit STM32F402 MCU which is powerful, and equipped with 256K Flash will provide more flexibility for developers.

Get the K3 Max keymap working on VIA
Since the VIA code for the K3 Max version is still awaiting approval from Github, it is not yet automatically recognized. Please download the appropriate keymap JSON file below, open VIA, turn on 'Show Design tab' on 'Settings' tab, and drag the JSON file into the 'Design' tab on VIA to get the K3 Max keymap working on VIA.


Suitable For All Devices
Offers a Mac layout while remaining compatible with Windows. It stands out in the market by providing the same multimedia and function key functions as Apple keyboards for Mac users, but with enhanced tactile feedback.
Additionally, you can configure different keymaps for both Mac and Windows devices. The VIA software is compatible with macOS, Windows, and Linux. The keyboard includes keycaps for both macOS and Windows, along with additional esc and enter keys, facilitating seamless switching between operating systems.

An Epic Core Inside
A powerful ARM architecture MCU equipped with 256KB Flash will provide more flexibility for developers. The polling rate is 1000 Hz on 2.4GHz and wired modes right out of the box, which makes the latency hardly noticeable even in competitive games.

Interior Acoustic Foam
Elevate your typing with K3 Max featuring advanced IXPE acoustic foam for silent keystrokes and enhanced comfort, coupled with resilient latex foam for superior key switch support, responsiveness, and durability. Redefining the standard for a quiet, comfortable, and responsive typing experience.

Low-Profile Gateron Switch
The Gateron low-profile MX 2.0 Mechanical switch is designed to enhance reliability. Gateron's reputable switches are your best choice for a precise, smooth, and reliable fingertip feel whether you prefer linear (red) or tactile (brown).

Low-Profile Double-shot PBT
Designed for premium type feeling, the K3 Max comes with our unique double-shot PBT keycaps that made of durable non-backlight shine through PBT material with excellent oil resistance for long-term use.

Redesigned Stabilizers
We've redesigned the stabilizers to make it stay on the level the same way as the switch while making sure it still delivers reliability and less wobble on the big keys like the space bar, left Shift, backspace, and Enter key.

RGB Backlights
Comes with more than 22 types of RGB backlight settings (as well as a static white backlight option), and 14 types of backlight settings on the White Backlight version. You can further fine-tune the RGB hue, saturation, brightness, effect speed with ease.

Ergonomic Support
Three levels of adjustable typing angle aim to provide long-lasting ergonomic wrist support.


Keyboard (Fully Assembled Keyboard)


  • 1 x USB-C Cable
  • 1 x USB-A to USB-C Adapter


  • 1 x USB-A 2.4GHz Receiver


  • 1 x Keycap Puller

USA Keychron K3 Max BT and 2.4G QMK RGB Tactile Ultra-slim Aluminium Mac/PC 75% Keyboard - K3M-B3-USA

Part Number
USB, Bluetooth, 2.4GHz
Cable length
1.25 Metre
Language Layout
Number of keys/buttons
Switch Type
Gateron low profile Brown
306 mm
116 mm
22 mm
530 g
Mac and PC
Gross Weight
800 g

USA Keychron K3 Max BT and 2.4G QMK RGB Tactile Ultra-slim Aluminium Mac/PC 75% Keyboard - K3M-B3-USA

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