Bluetooth Wireless Optical Cordless Mouse Mice for PC Laptop Netbook Notebook Dell HP Sony Lenovo Acer Asus MIS Switchable CPI among 800/1000/1200/1600; Features comfortable, ergonomic design Built-in software solutions with Bluetooth human interface device and comply with the standard version of the Bluetooth SIG Bluetooth 2.0 Work with Windows 98, ME, 2000, XP and Vista OS; AAA alkaline battery x2; Frequency band: 2.4-2.4835 GHz unlicensed ISM band Operation distance: 10m; Operating temperature: -10-85C Workable environment: 0-55C; Workable environment: 0-55C