ZJKC 2.4Ghz Slim Optical Wireless Mouse with USB Receiver (black) Smooth surface and somatological design,Mini size, easy to take Compatible with operating system: Windows and Mac, All Laptop or Desktop Low-Battery Indicator, indicator lights reminds you to change the batteries. Works maximum within 10 METER distance Power saving technology Mini USB receiver is included, which can be stored neatly inside the mouse when not in use, USB receiver is hidden in the Mouse bottom High precision capacity scrolling can enhance your searching speed, Very Easy to Install, only plug your USB receiver then you can use