Extremely bright green laser at 532 nm wavelength Output power of 5 power scope: ;<5mW (Class IIIa Laser Product) Color availability for pointer shell: black; silver. Range of approximately 9,000 ft (2600 m) in darkness 1.1 mm beam diameter at source Momentary push button switch Solid, heavy duty construction Constant wave output (as opposed to pulse output) Takes 2 "AAA" batteries (included) Class IIIa Laser Can be used for skypointing, projection on low clouds, signaling Packaging:50 pcs per carton, measurement, 37.5X33X12.50cm, gross weight, 14.50kgs. Standard meets: CE, FCC.