Lenovo Go RF Wireless Office Optical Mouse in Grey 2,400 DPI Mobile network connection___Yes even at lower fan speeds even at lower fan speeds Transmission Standard: 802 The Lenovo Go Wireless Vertical Mouse goes beyond the norm and delivers an experience that replicates the natural form of a handshake with a 45° palm grip and revised finger positioning for optimal posture and productivity Windows 7 Weight & dimensions Weight 97 g Height 62 mm Depth 63 mm Width 104 mm Packaging content Warranty card Yes Batteries included Yes Wireless receiver interface USB Type A Receiver included Yes Packaging data Package height 145 mm Package weight 315 g Package depth 87 mm Package width 113 mm Quantity per pack 1 pc(s) Logistics data Harmonized System (HS) code 84716070