Product Model: laser-303; Material: hard aluminum; Surface treatment: black anodized;Switch mode: touch switch; Battery: 18650 rechargeable battery; Wavelength: 405nm; Power: 200mw Start-up time: 0.001 seconds; Working voltage: DC3. 7 V 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, solid and durable; 2. External focus, easy to adjust the thickness of the light column and the size of the light spot; 3. 18650 battery, large capacity, long battery life; 4. Front switch, press to power on, release power for easy operation; 5. Import LD and accessories to increase the service life, more than 10,000 hours; 6. With a child safety lock, when not in use, you can turn the switch key to the red dot and pull it out to disconnect the power; 7. The built-in laser module improves heat dissipation and circuit board collection protection design (the current excellent laser circuit board fault improvement);