"Cap clip" Is a button Bluetooth mouse with silent buttons. It lets you free from clicking sounds. It can be used like an ordinary size S mouse by putting the cap at the other side.The cap protects the mouse from dust, injury, miss tap when not in use.The mouse conform to Bluetooth 3.0 standard. You can use the mouse without any receiver when your PC or tablet has Bluetooth HID profiles.If your PC or tablet does not have Bluetooth HID profiles, you can use the mouse by using Bluetooth adapter. (Recommended adapter: LBT-UAN05C2 (not included))■supported devices Windows PC, Macintosh equipped with Bluetooth HID profile.■Power supply rechargeable lithium-ion battery■the number of battery Rechargeable times Approximately 500 times■color yellow■dimensions (mouse)：when using width 41.0* depth 87.0* 30.3mm in height when stored width 41.0* depth 52.0* 30.3mm in height■dimensions classification：when using small size ■weight (Mouse)：Approximately 40g■accessories：15cm USB cable for recharge[USB a to micro-b]■terms of warranty：6months.