Supports Human Engineering: No With Multimedia Function : No Type: Slim,Standard,Wireless Applicable Object: Office Mouse Connection: Wireless Keyboard Connection: Wireless Optical Resolution: 1000 Interface: USB 1. 2.4G Ultra Thin Optical Wireless Keyboard and Mouse, Fashionable design 2. Advanced 2.4GHz wireless technology, no messy cables anymore and you can play computer games on bed or in sofa comfortably 3. Plug and play, with a range up to 10 working distance 4. The keyboard will turn to sleep mode automatically when idle 2.4GHz wireless transmission technology Frequency: 2402MHz ~ 2840MHz Wireless working channel: 16 (automatic frequency hopping) USB ultra-fine receiver: 10M transmission distance Keyboard battery: 2 x AAA battery ( not included ) Mouse battery: 1 x AAA battery ( not included ) color:White Material:plastic size:370 x 125 x 25mm Package Contents: 1 X Wireless Keyboard 1 X Wireless Mouse Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.