High-Power Laser Green laser with 532nm wavelength,visible up to 5000 meters at nightDurable Construction Made from aviation-grade aluminum alloy for long-lasting durabilityChild Safety Lock Features a removable key switch for added safety when not in useAdjustable Focus External focus adjustment allows for easy beam width and spot size controlLong Battery Life Powered by a high-capacity 18650 rechargeable battery for extended useQuick Activation Front-mounted switch enables instant on/off functionality for convenient operationExtended Lifespan Imported LD and components ensure over 10,000 hours of operational lifeSpecifications:Model: Laser-303Material: Hard aluminumSurface Treatment: Anodized blackSwitch Type: Touch-sensitiveBattery: 18650 rechargeable,1000mAhWavelength: 532nm (green)Activation Time: 0.001 secondsOperating Voltage: DC 3.7V with key protectionRange: 5000 meters (visible to naked eye at night)Dimensions: 23mm x 168mmPackage included:1 x Laser Pointer1 x Battery1 x Charger