1. Specifications: diameter 14×155mm 2. Material: copper + aluminum 3. Batteries used: 2 x AAA dry batteries (not included) 4. Output wavelength: blue-violet light 405nm 5. Output power: 5MW 6. Range: 10-100 meters 7. Spot diameter: The minimum spot diameter is less than or equal to the diameter of 1.0mm; the light spot at 15m is less than the diameter of 18mm 8. Circuit control: APC line 9. Working voltage: DC 3.0V 10. Starting voltage: DC 2.3V 11. Working current: less than 350mA