Check the listing for details. Waterproof 405nm Violet Blue Laser Pointer Focusable Laser Module 405T-800. Condition: New. Listed at 112.61 USD. Waterproof 405nm violet Blue Laser Pointer Focusable Laser Module ParametersModel: 405T-800-F-W-XLWavelength:405nmWorking Voltage:DC=3.7VStart voltage:2.5VWorking Voltage:3.7V @4.9ASpot Size:about 15-18mm at 5MOperating temperature:-10 ℃~ +60 ℃Beam pattern:Dot(Continuous line Shape)Focusable:YesWaterproof:YesFocusing method: Zoom by rotating the front threaded front coverDiving level: 5 meters divingElectric Control:ACCWarm-up time:NoneDimensions:φ33 * 135mmHousing Material:Aviation aluminumBattery:1x 18650 Lithium battery required（not included） Features The 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.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. Package1pc 405T-800-FANG Laser Pointer (Battery not included for easy custom clearance)