Macally Bluetooth Optical Micro Mouse w. USB charger. Device interface: Bluetooth, Movement detection technology: Optical. Wireless range: 10 m. Battery type: AAA. Mouse weight: 0.11 kg. Compatible operating systems: Mac OS X v10.2.8 Microsoft Windows 98SE / 2000 / ME / XP, Mouse dimensions (WxDxH): 81.2 x 50.8 x 33 mm