Model: Laser-303; Material: Hard aluminum; Surface treatment: Black anodized; Switch mode: Side press switch; Battery: 18650 rechargeable battery; Wavelength: 405nm; Output power: 200mW; Start-up time: 0.001 seconds; Operating voltage: DC 3.7V with key lock protection; Range: 100-500 meters (maximum visible distance at night under clear conditions). Product features: 1. Constructed from aerospace-grade aluminum alloy, durable and robust; 2. Adjustable focus design allows easy control of beam thickness and spot size; 3. Powered by 18650 rechargeable battery for high capacity and extended runtime; 4. Side switch operation – press to turn on, release to turn off for convenient use; 5. High-quality imported laser diode and components for improved longevity, lifespan exceeding 10,000 hours; 6. Safety key lock feature – when not in use, rotate the switch key to the red mark and remove it to disconnect power; 7. Built-in laser module with enhanced heat dissipation and protective circuit design to improve reliability and reduce board failure risks.