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. Suitable For All Devices You can configure different keymaps for both Mac and Windows devices. While VIA software is compatible with macOS, Windows, and Linux. Includes keycaps for both macOS and Windows (and additional esc and enter keys) to allow you to switch between operating systems with ease. Ultra-Slim 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. With full QMK and VIA support, you can easily program and remap each key on the keyboard. The open-source firmware means endless possibilities for keyboard layouts, shortcuts, backlight effects, and more. 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. Adjustable Rubber Feet Three levels of adjustable typing angle ( 0º, 6º and 9º) Ergonomic Support Three levels of adjustable typing angle aim to provide long-lasting ergonomic wrist support. White Backlights 14 types of backlight settings on the White Backlight version. You can further fine-tune the White hue, saturation, brightness, effect speed with ease. What's in the box? Fully Assembled Version, The box you received with the K3 Max keyboard contains all the items shown on the picture, thank you for your order! SPECIFICATION Number of Keys 84 (75%) Switches Gateron low-profile mechanical Frame Material ABS+Aluminum frame Keycap Material Low-profile double-shot PBT Polling Rate 1000Hz(2.4Ghz and Wired Mode); 90Hz(BT Mode) N-Key Rollover (NKRO) Yes for both wireless and wired modes Backlit 22 types of RGB backlight options plus endless possibilities Battery 1550 mAh rechargeable li-polymer battery Connection 2.4 GHz / Bluetooth / Type-C wired Bluetooth version 5.1 Bluetooth Device Name Keychron K3 Max Typing Angle 2.5º, 4.2º and 6.5º