Check the listing for details. Waterproof Focusable 488nm Cyan Blue Dot Laser Module. Condition: New. Listed at 65.25 USD. Waterproof Focusable 488nm Cyan Blue Dot Laser Module ParametersModel: 488T-60-F-W-18650-XLLaser Shape DotWavelength:488nmWorking Voltage:DC=3.7VStart voltage:2.5VSpot Size:about 5M at 15-18mmOperating temperature:-10 ℃~ +60 ℃Beam pattern:Dot(Continuous line beam)Focusable:YesWaterproof:YesFocusing method: Zoom by rotating the front threaded front coverDiving level: 5 meters divingElectric Control:ACCDimensions:φ32 * 135mmHousing Material:Aviation aluminumBattery:1x 18650 Lithium battery required（not included） 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. Package1pc Adjustable 488nm Blue Laser module（Battery not included for easy custom clearance)