1,mini Usb Pc Laser Pointer 2,15meter in control 3,Both green and ... for Work and entertainment. 5,CE,FDA,ROHS mini Usb Pc Laser Pointer1,FU brand products,popular in worldwide.2,15meter ... LED will flash 2 times.If the product can't page up/page down as usual,Please re-synchrony again.3.The ... computer of the occasion.FU-Lasers For You! mini Usb Pc Laser Pointer