... 4g foldable wireless mouse 2.effective in 10-15M 3.usb port 4.automatic power saving 5.CE FCC,UL, ... 1,New design 2.4g foldable wireless mouse3,Connector: Mini USB Receiver, 3keys, 1 scroll wheel.4,Sleep mode for ... InterfaceUSBPlug & PlayYesTracking MethodOptical Key-pressing Lifetime1 000 000 ApplicationDesktop / Laptop Hand OrientationBoth HandsCompatible SystemWindows 7, Vista, XP, 2000, NT, ME or ...