Keyboard Keychron K2 Max 75% QMK Wireless Swappable RGB Keychron Super Red Switch – Black

Keychron K2 Max is a wireless custom mechanical keyboard. It supports 2.4 GHz, Bluetooth, and a wired connection. It allows anyone to master keys or macro commands on its 75% layout through the Keychron Launcher web app. Besides, it has included keycaps for Windows and macOS, and users can hot-swap with the Keychron Super mechanical switch in a breeze(hot-swappable version only). The K2 Max upgraded the typing experience with multiple layers of acoustic foams, such as IXPE, PET, and EPDM, ensuring a superior sound and typing experience. SPECIFICATIONNumber of Keys: 84 (75%)Switches: Keychron Super mechanicalSwitch Face: South-facingNumber of Multimedia Keys: 12Frame Material: ABS / ABS Aluminum frameKeycap Material: Double-shot PBTKeycap Profile: OSA (OEM profile with spherical-angle)Layout: ANSIPolling Rate (2.4GHz and Wired Mode): 1000HzPolling Rate (BT Mode): 90HzN-Key Rollover (NKRO): Yes for both wireless and wired modes CONNECTIVITY AND POWERBacklit: 22 types of RGB backlight options plus endless possibilitiesBattery: 4000 mAh rechargeable li-polymer batteryWireless Working Time (Backlit off): Around 190 hours (Lab test result may vary by actual use)Wireless Working Time (RGB): Around 100 hours (Lowest brightness)Connection: 2.4 GHz / Bluetooth / Type-C wiredBluetooth version: 5.2Bluetooth Device Name: Keychron K2 MaxCompatible System: macOS / Windows / Linux PHYSICAL UNITDimension (Plastic frame version): 311.54 x 121.54mm (12.27 x 4.79″)Weight: 940g / 2.07 lbsDimension (Aluminum frame version): 316.62 x 126.56 mm (12.47 x 4.98″)Weight: 1080g / 2.38 lbsHeight incl. keycap (front): 32.06 mm (1.26″)Height incl. keycap (rear): 41.54 mm (1.64″)Typing Angle: 5º, 9º and 12ºMCU: ARM Cortex-M4 32-bit STM32F402 (256KB Flash)Operating Environment: -10 to 50℃