Model: Laser-303; Material: Hard aluminum; Surface treatment: Black anodized; Switch mode: Touch switch; Battery: 18650 rechargeable battery; Wavelength: 405nm; Output power: 200mW; Start-up time: 0.001 seconds; Operating voltage: DC 3.7V; Range: 100-500 meters (maximum visible distance at night with naked eye)Product features: 1. Made from aerospace-grade aluminum alloy, solid and durable; 2. External focus design allows easy adjustment of beam thickness and spot size; 3. Uses 18650 rechargeable battery for high capacity and long runtime; 4. Front switch for simple operation press to turn on, release to turn off; 5. High-quality imported laser diode and components for extended lifespan, exceeding 10,000 hours; 6. Equipped with safety lock when not in use, rotate and remove the switch key to the red mark to disconnect power; 7. Built-in laser module with improved heat dissipation and protective circuit design to enhance reliability and reduce board failure.