Wireless optical mouse, green laser, USB mass storage(write protection), ... at any direction now, just like use your mouse.Features:Wireless optical mouse funtionGreen Laser Mass USB storage is optional(1G ... left, right, F5, B, ESC and laser pointer key.Play, pause, forward, backward, volume up and down, fixed ... the laser beam or its direct reflection. Wireless Laser Pointer (Optical mouse, Green Laser)