WiWu WM101 Wimice Dual Wireless Mouse is suitable for travel, office and similar environments. It has the ability to be used wirelessly or as plug and play with cable. It features Bluetooth 4.0 and a Wireless 2.4 GHz dual mode connection. It has a usage range of 10 meters. It features 1000/1200/1600 DPI options. It is very lightweight, compact and has a stylish design. It comes with a 450 mAh battery capacity and it can be charged directly from the laptop. No need to remove batteries. The slim & portable design makes it highly portable. Get rid of clicking sounds thanks to the silent key operation design. It has no warranty.