Digitus DA-20128. Device interface: RF Wireless, Movement detection technology: Optical, Movement resolution: 1600 DPI. Frequency band: 2.4 GHz, Wireless range: 10 m. Battery technology: Alkaline, Battery type: AA. Mouse weight: 0.102 kg. Compatible operating systems: Microsoft Windows 7/Vista/XP, Mac OS 10.x, Mouse dimensions (WxDxH): 116 x 62 x 38 mm