The Keychron K1 Max is a wireless mechanical keyboard with QMK/VIA firmware support for extensive customization options. This low-profile keyboard uses optical switches for precise, responsive typing with minimal key travel. It offers multiple connectivity options including Bluetooth 5.1 for wireless operation and a USB-C cable connection. The keyboard features a compact 84-key layout with RGB backlighting and programmable macros. Constructed with an aluminum frame, it provides durable build quality with a slim profile height of about 22 mm. The optical-mechanical switches deliver tactile feedback with an actuation force of 45 g and a key travel of 3.5 mm. The battery capacity is 4000 mAh for extended usage time between charges. Compatible with Windows, macOS, Linux, and Android operating systems, this keyboard supports both 2.4 GHz wireless and Bluetooth connections with the ability to pair up to three devices simultaneously. The keycaps are made from double-shot ABS with laser-engraved markings for lasting durability. The keyboard includes adjustable feet for ergonomic typing angles and features N-Key rollover for precise simultaneous key presses. Weighing approximately 800 g, it is portable while maintaining stability during use. The QMK and VIA firmware allows users to remap keys, create custom macros, and customize lighting effects through intuitive software interfaces.