Sweex Wireless Laser Mouse. Device interface: USB, Movement detection technology: Laser, Movement resolution: 1600 DPI. Frequency band: 2.4 GHz, Wireless range: 10 m. Power source: Batteries, Battery technology: Alkaline, Battery type: AAA. Mouse weight: 85 g. Mouse dimensions (WxDxH): 75 x 112 x 46 mm