Thank you for viewing our products. Immediate purchase is welcome. Thank you. Professional specification, green laser pointer. The brilliance of green light enhances the stage of business. Why not enhance your presentation professionalism with outstanding visibility? *1 Laser output: 1mW or less, Class 2, Wavelength: 532nm, Laser light reach: up to approximately 300m (*Maximum reach is the maximum value in a dark place) Size: Diameter 12mm x 152mm / Weight: 58g (including battery) / Batteries used: 2 AAA alkaline batteries (included) / Continuous usage time: Approximately 3 hours / Operating temperature: 15-30°C Green laser light is 8 times easier to recognize than a general red laser pointer, and is easily recognized by a wide range of people.