... , which is much brighter than red laser. WLGP-008 use optical mouse instead of the pushbuttons which are widely used by ... now, just like use your mouse.Features:Wireless optical mouse funtionGreen Laser Mass USB storage is optional(1G~4G, USB write protection ... , pause, forward, backward, volume up and down, fixed timing alarm/media playerClock set(Self-definite timing, fixed timing alarm, count down ...