Bluetooth 4.0: Our Dierya wireless mechanical keyboard is bulit with bluetooth 4.0 connection, which is fast connection with mobile, providing lower power consumption, longer service life DUAL SPRAY FEEL PAINTING KEYCAP: Dierya keyboard keycap is spraied on the surface providing a matte or semi-matte elegant appearance, feeling very delicate, smooth, , solemn. Excellent workability and good adhesion. It can also cover defects or water marks in general injection molding 7 LIGHT RGB EFFECTS: Dierya keyboard has 7 colors red/green/blue/yellow/purple/white/light green/white, combining 7 RGB lights effect, such as reactive mode, wave mode, ripple mode, aurora mode shocking your vision while playing