Keychron K1 Max QMK/VIA Wireless Custom Mechanical Keyboard, Red Linear Low-Profile Gateron Switch, 80% TKL Size, Tri-Mode Connectivity (2.4GHz, BT, Wired), English-Arabic Layout, Black | K1M-H1-AR

Specifications Number of Keys 87 (80%) Switches Gateron low-profile mechanical Switch Face North-facing Number of Multimedia Keys 12 Frame Material ABS + Aluminum 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 Compatibility Gateron/Keychron low-profile mechanical switches only (QMK does NOT support low-profile optical switches) Backlit 22 types of RGB backlight options plus endless possibilities Battery 2000 mAh rechargeable li-polymer battery Wireless Working Time (Backlit off) Around 95 hours (Lab test result may vary by actual use) Wireless Working Time (RGB) Around 50 hours (Lowest brightness) Connection 2.4 GHz / Bluetooth / Type-C wired Bluetooth Version 5.1 Bluetooth Device Name Keychron K1 Max Compatible System macOS / Windows / Linux Dimension 346 x 118.5 mm (13.62 x 4.66") Weight 608 g / 1.34 lbs Height without Keycap (front) 7.72 mm (0.3") Height without Keycap (rear) 14.7 mm (0.58") Height incl. Keycap (front) 18.2 mm (0.72") Height incl. Keycap (rear) 24.1 mm (0.95") Typing Angle 3.37º, 4.2º and 6.7º MCU ARM Cortex-M4 32-bit STM32F402 (256KB Flash) Operating Environment -10 to 50℃