G301 Green Laser Pointer Pen 532nm Adjustable Beam + Battery Charger - Black
Fixed focus; Widely used in various laser pointing teaching demonstration with a laser light source laser positioning teaching command Architecture Exhibition control instructions etc. Working temperature: +15? ~ +35?. (In winter if temperature is low outside of room please warm up the laser pen inside room for 5 mins). Storage temperature: -10? ~ +40? Cautions: Keep out of reach from children. Avoid direct eye exposure to laser beam. Don't keep the laser on continuously for more than 30 seconds or it will get burnt from inside easily