... feeling. 2> Intimate waterproof design to prevent short circuit of keyboard from water flowing. 3> Laser keycap,the words are ... materials, the flexibility feel is excellent with quick responsiveness.Mouse features: Dimension117x60x38mmNet Weight83GDPI800 DPIKeystroke service life4 MillionColorAvailable in various ... ,ME,XP,2003,X64Working temperature0-45°CReceiverUSB 2.0 Keyboard and Mouse Combo