... .good design 3.mini size 4.CE ,ROH,CB Mini Bluetooth Wireless Cordless Optical Mice Laptop Main Features: Brand new & ... Key layout: 3 keysSize: 89*53*35Transmission distance: 10 metersSupport bluetooth V2.0, HID profileV1.0, AFHLow voltage alarmFrequency: 2.4GHz ... bluetooth mouse 1x USB Receiveiver System Requirements:-Window xp/vista/7-Mac OSx,V10.1 or higher-Laptop requires a USB Bluetooth adapter ...