Sweex Wireless Mouse Voyager Red USB. Device interface: RF Wireless, Movement detection technology: Optical, Movement resolution: 2000 DPI. Frequency range: 2.4 GHz, Wireless range: 10 m. Battery technology: Alkaline, Battery type: AAA, Battery life (max): 250 h. Mouse dimensions (WxDxH): 66 x 107 x 42 mm, Mouse weight: 78 g