The K4 gives the freedom to customize your typing experience with its hot-swappable PCB. With the pre-installed Gateron G Pro mechanical switch providing unrivaled tactile responsiveness on the linear Red switch with up to 50 million keystroke lifespan. The K4 has enchanting RGB backlight with modern keycap legends that sync with your mood; available in 15+ types of flashing light mode. The K4 can last up to 240 hours (with backlit disabled) with a 4000 mAh big battery, which is one of the biggest in mechanical keyboards. N-key rollover (NKRO) on wired mode or 6KRO on wireless mode. With a unique Mac layout, the K4 has all the necessary Mac function keys while still being compatible with Windows. Extra keycaps for both Windows and Mac operating systems are included. Connects with up to 3 devices via Bluetooth and switch among them easily. With high reliable and broad compatibility Broadcom Bluetooth 5.1 chipset, the K4 version 2 is best to fit home, office and light gaming use while connecting with your smartphone, laptop and iPad. It also has wired mode with USB Type-C connection. A hot-swappable 96% layout (100-key) wireless mechanical keyboard with aluminum frame, with a number pad in a compact design that’s built for productivity and a tactile typing experience. Personalize per-key typing experience without soldering, you can alter every switch on the K4 hot-swappable version with ease.