... shipping, 2012 new model newest fashionable - wireless mouse and mice 2.4G receiver SpecificationMouse buttons: left, middle button, right, wheel forward, back ... Resolution Voltage: 1.5 V, AA * 1mouse working current: 15mA Receiver Input Current: 5v DC 30mA sink interface type: usbreceivers Size ... solution. Thank you very much! 2012 new model newest fashionable - wireless mouse and mice 2.4G receiver