Keyboard Keychron K1 Max Wireless 80% Swappable RGB Backlight Low Profile Gateron Red Switch

Keychron K1 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 80% TKL layout through VIA. Besides, it has included LSA (low profile spherical-angled) profile keycaps for both Windows and macOS, and users can hot-swap with Gateron low-profile MX mechanical switch in a breeze (for RGB Backlight Hot-Swappable Version only). SPECIFICATIONNumber of Keys: 87 (80%)Switches: Gateron low-profile mechanicalSwitch Face: North-facingNumber of Multimedia Keys: 12Frame Material: ABS Aluminum frameKeycap Material: Low-profile double-shot PBTLayout: ANSIPolling Rate (2.4GHz and Wired Mode): 1000HzPolling Rate (BT Mode): 90HzN-Key Rollover (NKRO): Yes for both wireless and wired modes*The K1 Max is currently compatible with Gateron/Keychron low-profile mechanical switches only, as QMK does NOT support low-profile optical switches. CONNECTIVITY AND POWERBacklit: 22 types of RGB backlight options plus endless possibilitiesBattery: 2000 mAh rechargeable li-polymer batteryWireless Working Time (Backlit off): Up to 166 hours (Lab test result may vary by actual use)Wireless Working Time (RGB): Up to 86 hours (Lowest brightness)Connection: 2.4 GHz / Bluetooth / Type-C wiredBluetooth version: 5.1Bluetooth Device Name: Keychron K1 MaxCompatible System: macOS / Windows / Linux PHYSICAL UNITDimension: 346 x 118.5 mm (13.62 x 4.66″)Weight: 608 g / 1.34 lbsHeight 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 6.7ºMCU: ARM Cortex-M4 32-bit STM32F402 (256KB Flash)Operating Environment: -10 to 50℃