Features: brand new and high quality 16.8 million RGB Backlight Types:Features RGB lighting with 16.8 million LED colors, rhythm and sound combinations of lighting, with additional key-programming and macro-creation for three definable layers. Superior Hardware Architecture:In order to maximize the full functionality of the sk21 functionality, we have integrated a 32-bit M3 MCU chipset with built-in 8M Flash memory and 3-channel 256 professional level RGB color management chip. Your keyboard programming and macro customizations will be seamless, and you can be sure of a smooth user experience. Customize your keyboard's backlighting through the software. Ergonomic gaming keyboard design to provide the most comfortable gaming experience. optical switches can be hotswapped at for wish and replaced by other switches. Hot swap keyboard do not recquire you to solder / desolder switches. (Hot Swappable with Optical switches only) Bluetooth-compatible or wired dual mode use, to meet all kinds of use scenarios. Specifications: Model: SK61S Material: ABS Color: black, white Axle Body Type: Black Blue Tea Red Yellow(optional) Axis Body Type: ( is an internationally switch and feels good for touch.) Backlight type: RGB light Keys: 61 keys Connection: wired / wireless Bluetooth-compatible (Dual Mode) Interface: Type C / Bluetooth-compatible 5.0 USB-C Cable Length (for m): 1.5m / 4.921ft (Approx.) Keyboard life (for time): more than 100 million Waterproof level: IP68 Package Includes: 1x Gaming keyboard note: No retail package. Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you bid. Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you!