1.Excellent ergonomic design, the operator can more comfortable fit the product, have a more natural grip, so as to reduce the discomfort caused by long-term use and bring comfortable experience 2.Intelligent connectivity, just plug the wireless receiver into your computer USB port, and no extra driver required. 3.Adopt 2.4GHz wireless technology, provides a powerful, reliable connection, increase working distance of up to 10m. 4.Adopts the top class of power saving chip, 5 times power saving than ordinary wireless mouse, standby time is over 12 months. 5.Adjustable DPI Function: 800/1200/1600, Maximum Acceleration 20G Key number: 6 keys Transmission: 2.4Ghz Wireless interface: USB nano-receiver Working dISTANCE: 10M System support: xp/Vista/Win7/8/10 color: Black Material: ABS Package Contents: 2 x Receiver 2 x 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 picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.