1.Ultra-thin 2.4G Wireless Mouse with mini usb adapter 2.2.4GHz free moving in ... .Rated working voltage: 3V Ultra-thin 2.4G Wireless Mouse with mini usb adapter Feature: 2.4GHz free moving in ... Weight : 53greceiver Weight : 10g System Requirements:Any PC/Notebook compatibles with USBWindows 95, 98, NT4.0, 2000, Me, XP, Vista ... , Win 7, Linux or Mac OSPackage:Blue Wireless mouse x 1USB Receiver x 1