Keychron K2 Max QMK Wireless Mechanical Keyboard With 75% Layout, Super Banana Switch, RGB Backlight Aluminum Frame, 2.4GHz/BT/Wired, Hot-Swappable Option, Double-Shot PBT Keycaps for  macOS / Windows / Linux | K2M-J4

�� Expert Features – For the Typing Jedi and Macro Wizards Tri-Mode Connectivity: Switch between 2.4 GHz (1000 Hz polling rate), Bluetooth 5.1 (connects to 3 devices), and wired Type-C. One board to rule all your platforms. QMK VIA Keychron Launcher Support: Full key remapping, macros, and shortcut creation made easy via open-source firmware and an intuitive web app (wired mode required). Hot-Swappable (Optional): Swap your switches in seconds—compatible with most 3-pin and 5-pin MX-style switches. No soldering, just click and go. Keychron Super Banana Switch: Linear, buttery, and built for speed with up to 50 million clicks lifespan. Includes transparent top housing for brighter RGB goodness. Acoustic Foam Layers (IXPE, PET, EPDM): Dampens clacks, refines the thock—making your keystrokes sound as good as they feel. South-Facing RGB Backlight: Better RGB visibility for the typist, 22 lighting modes, and zero interference with Cherry-profile caps. Double-Shot PBT Keycaps (OSA Profile): Comfortable, spherical keycaps that resist shine, sweat, and smudges. Ergonomics Dialed In: Three typing angles (5°, 9°, 12°) and a 75% layout with minimal desk footprint. Multi-System Support: Toggle switch for macOS/Windows plus extra keycaps for both OS. Dual layout memory included. Steel Plate PCB Screw-In Stabilizers: Sturdier typing, less wobble, and better feedback—especially on larger keys. Massive Battery Life: 4000 mAh battery delivers ~190 hrs with backlight off and ~100 hrs with RGB at low brightness. Built for Developers: With a 32-bit ARM Cortex-M4 STM32F402 MCU and 256KB flash, it’s perfect for coding and customization projects. �� Expert Specs – At a Glance Feature Details Layout 84 keys (75%) – ANSI Switch Type Keychron Super Mechanical (Hot-swappable optional) Keycap Material Double-shot PBT (OSA Profile) Backlight South-Facing RGB – 22 presets Connectivity 2.4 GHz / Bluetooth 5.1 / USB-C Wired Polling Rate 1000 Hz (2.4GHz Wired), 90 Hz (Bluetooth) Battery 4000 mAh Li-Polymer Wireless Runtime (No RGB) Up to 190 hours Wireless Runtime (With RGB) ~100 hours (low brightness) Compatible OS macOS / Windows / Linux Switch Compatibility 3-pin & 5-pin MX-style Stabilizers PCB Screw-In (Supports 3rd-party) MCU ARM Cortex-M4 STM32F402 (256KB Flash) Material Options Plastic or ABS Aluminum frame Dimensions (Plastic) 311.5 x 121.5 mm (12.27 x 4.79″) Dimensions (Aluminum) 316.6 x 126.6 mm (12.47 x 4.98″) Weight 940g (Plastic), 1080g (Aluminum) Typing Angles 5º / 9º / 12º Height (Front/Rear) 32.06 mm / 41.54 mm Key Remapping VIA / QMK / Keychron Launcher