Compact, portable and waterproof. 50mw ultra-bright green laser beam. Designed for aiming at any desired targets on projection screens, video monitors, presentation graphics. Can highlight very small or far away objects. Never stare directly at the laser beam and avoid direct eye exposure. A must have item for anyone that needs a super bright laser pointer. Easy to operate: press the tail button switch. Easy to carry, install and remove. Powered by 1 × CR123A 3V 1300mAh lithium battery (included). Come with a carrying case.