Check the listing for details. Waterproof Focusable 450nm Blue Laser Module 450T-5000. Condition: New. Listed at 143.00 USD. Waterproof Focusable 450nm Blue Laser Module 450T-5000 ParametersParameters Model: 450T-5000-F-W-XL Laser Shape Dot Wavelength:450nm Working Voltage:DC=3.7V Start voltage:2.5V Working Voltage:3.7V @4.9A Spot Size:about 15-18mm at 5M Operating temperature:-10 ℃~ +60 ℃ Beam pattern:Continuous line Shape Focusable:Yes Waterproof:Yes Focusing method: Zoom by rotating the front threaded front cover Diving level: 5 meters diving Electric Control:ACC Warm-up time:None Dimensions:φ33 * 135mm Housing Material:Aviation aluminum Battery:1xbattery required（not included）Duty Cycle:15 seconds off,15 seconds off FeaturesThe design adopts simple and fashionable style. The appearance and feel are quite good. The module is made of imported laser tube. The concentricity is high precision, the structure is close, the pressure assembling process is adopted. Design, and designed for waterproof structure, and can focus, tail switch for the long light switch.Our laser pointer is very powerful, so don't see it for long time with bare eyes.Please storage the laser in dry environment and keep it away from children.Please avoid direct eye exposure to the laser when use it as a pure laser pointer. Package1x Waterproof Focusable 450nm Blue Laser Module 450T-5000 (Battery not included for easy custom clearance)