... engineers, doctors, managers and more. • Design with clip, can hold it in pockets or clip on notebooks • Lightweight and handy, suitable for put ... • Use the laser pointer to point at any desired targets on projection screens, video monitors, and presentation graphics • Best choice of ... : 650 nm.• Output mode: Constant Wave.• Press button for ON / OFF.• Powered by AAA 1.5V x 2pcs Alkaline Batteries ...