Detailed Product Description wireless mouse13 buttons Mini wireless optical mouse 227MHZ high technology of ergonomic design3800DPI High resolution 4)convenient scroll wheel , working freely on usual surfaces 5work distance : within 1.5meters 6)radius of 360 degree , Smart automtically sleeping and wake-up saving power function 7)interface : USB8)unit size: 97.2*55.6*34.2mm9)packing:white box