Wirlss 2000DPI USB 2.0 Rcivr Optical Computr Mous 2.4GHz Microfono ergonomico per laptop PC Sound Silnt

4352 QA Q1. After I turn on the mouse, the red light flash and off ? A1. Please put USB receiver in computer when you text the mouse. Because only when mouse matched the USB receiver, it will work. Q2. What is the different between Soundand Silent ? A2. when you press the button of mute mouse , the mute one make less noise than sound version Specifications Item Name: 2.4G Wireless Mouse Buttons: 4 Buttons ustable DPI Switch: 800-2000DPI Verison: Silent(Mute) / Sound Color: Black / Gray / Green / Red WiFi Range: 10M Battery: 2 * AAA battery 1.5V 【NOT work with 1.2V】 (Not Included) Key Life: 10 million times Size: 115*80*40mm Compatible : Windows / VISTA / ... NOTE About the slient mouse version , only the right and left button is silent ,the dpi button and forword back button has some noise Package 1 x Wireless Mouse( Without Battery ) 1 x USB Receiver USB Wireless Mouse 2000DPI USB 2.0 Receiver Optical Computer Mouse 2.4GHz Ergonomic Mice For Laptop PC Sound Silent Mouse