Product Model: laser-303; Material: Hard aluminum; Surface treatment: black anodized; Switching mode: touch switch; Battery: 18650 rechargeable battery; Wavelength: 405 nm ; Power: 200 mw Start-up time: 0.001 second; Operating voltage: DC3. 7V with key protection; Range: 100-500 meters (the farthest distance visible to the naked eye at night) Product advantages 1. Made of aviation aluminum alloy, strong and durable ; 2. External focus, easy adjustment of light column thickness and light point size ; 3. 18650 battery, large capacity, long battery life; 4. Front switch, press to turn on, release power for easy use ; 5. Import LD and accessories to increase lifespan, more than 10,000 hours ; 6. With a child safety lock, when not in use, you can turn the key on the switch to the red dot and remove it to turn off the power ; 7. The integrated laser module improves heat dissipation and circuit collection protection design (the current excellent improvement of laser circuit failures) ;