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)