Features: 1.2.4G wireless transfer technology for strong and secured wireless signal. 2.Ergonomic inclination angle, comfortable tapping feel, the wrist is naturally vertical when used, reducing hand fatigue. 3.Responsive keys, quick to rebound, suitable for long?term typing, practical to use. 4.Micro USB receiver, plug and play, without any driver, very convenient for using. 5.Fine workmanship, stylish and simple, thin and lightweight, which can better show your individual taste. specification:Condition: 100% Brand New Item Type: Keyboard Mouse Set Material: ABS Optional Color: Black, White Supporting Battery: 3 x AAA Dry Battery, 2pcs for keyboard and 1 for mouse (not include) Keyboard Size(LxWxH): Approx. 285 x 120 x 23mm/11.2 x 4.7 x 0.9in Mouse Size (LxWxH): Approx. 85 x 48 x 26mm/3.3 x 1.9 x 1in Number of Keys: Keyboard 78 Keys, Mouse 3 Keys Keyboard Interface: USB Connection Principle: 2.4G wireless principle System Requirements: for Win7/for win8/for xp, does not need to drive the keyboard PackageList:1 x Keyboard1 x Mouse1 x USB Receiver1 x Keyboard Cover1 x Manual NoteThe mouse has a unique designed, please refer to the instruction manual before use.