Q&A<br> <br> <br> <br> <br> <br> Q1. After I turn on the mouse, the red light flash and off ?<br> <br> <br> <br> <br> <br> A1. Please put USB receiver in computer when you text the mouse. Because only when mouse matched the USB receiver, it will work.<br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> <br> Q2. What is the different between Soundand Silent ?<br> <br> <br> <br> <br> <br> A2.  Silent version is mute version,  it does not have sound when you press left and right button.<br> <br> <br> <br> <br> <br> <br> <br> <br> <br> Specifications:<br> <br> Item Name: 2.4G Wireless Mouse<br> <br> Buttons: 4 Buttons<br> <br> Ajustable DPI Switch: 800-2000DPI<br> <br> Verison: Silent(Mute) / Sound<br> <br> Color: Black / Gray / Green / Red<br> <br> WiFi Range: 10M<br> <br> Battery: 2 * AAA battery 1.5V 【NOT work with 1.2V】 (Not Included)<br> <br> Key Life: 10 million times<br> <br> Size: 115*80*40mm<br> <br> Compatible : Windows / VISTA / ...<br> <br> <br> <br> Package Included:<br> <br> 1 x Wireless Mouse( Without Battery )<br> <br> 1 x USB Receiver<br> <br> <br> <br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store