The mouse is with ergonomics and fashion appearance design,which is with good hand feling. This cordless mouse is low pwer consumption,and it comes with many low power mode. It is suitable for both men and women. The arc wireless mouse is moving with no burr and smooth,give you the best experience. With the excellent workmanship and good texture,this is also a good gift idea. Type:arc wireless mouse Color:show as pictures. Size:100-120mm. :2402mhz-2480mhz operation channel:16,automatic frequnency hopping Rated voltage:1.5V/3.0V Reted current:7.5-14 MA Max. Acceleration:28ft/Sec. USB:ver. 1.1/2.0. Battery: 2*AAA batteries (Not included batteries) Note: There might be a bit color distortions due to different computer resolutions. There might be size errors due to different computer resolutions. Color: Black Material: plastic Package Contents: 1 * Wireless Mouse (without batteries) 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.