Seamless Tri-Mode Connectivity Switch effortlessly between 2.4GHz wireless, Bluetooth 5.0, and USB-C wired connections for ultimate versatility. The RK F99 supports multi-device connectivity and features dazzling south-facing RGB lighting for vibrant shine-through effects. 96% Keyboard with PBT Keycaps The compact 100-key design maximizes desk space while retaining full functionality including arrow keys and number pad. Equipped with durable, oil-resistant Cherry profile PBT keycaps that prevent shine and maintain texture for long-lasting typing comfort - ideal for both gaming marathons and work productivity. Triple-Layer Sound Dampening With 3 layers of internal padding, including a thick bottom sound-absorbing foam, an IXPE switch pad, and a latex dampener, this keyboard structure significantly minimizes hollow sounds and cavity noise, delivering a super smooth and satisfying typing experience. Massive 5000 mAh Battery Boasting a high-capacity 5000 mAh battery, this 95%