Product details Features: 100% brand new and high quality. Adjustable resolution, three levels and below Features: mini size, ergonomics design,portable to use,comfortable to hold USB receiver,plug and play,out of the data cable Quiet clicks free your worry about bothering other beside you and keep you focused while working or studying Mini size and easy to carry,it is compatible with your PC,desktop and laptop Description: Type:Wireless Color:Red,blue,black,gray Package Size:11*6.8*3.6 cm Int