Model: laser 301Material: hard aluminumExterior Finish: black anodizedSwitch mode: touch switchBattery: a 18650 rechargeable lithium battery (package not included)Wavelength: 532nm;Start-up time �� 3 secondsOperating voltage: 3.7VDimensions: �� 25mmX155mm Advantages:1 aviation aluminum alloy， durable; beautiful new shape2 external focus， easy adjustable beam thickness， spot size (focusing very convenient);3.1 18650 battery-powered， large capacity， easy to purchase， continued long;4 side switch design， press the power light， loosen off;5 import LD and accessories， increased service life， more than 8000 hours;6 built-in laser module to improve cooling devices， circuit board protection design collection (for domesticCurrently excellent laser circuit board defect reconstruction carried out). Currently excellent laser circuit board defect reconstruction carried out).Package Includes(Charger and Battery Not Included)1 x 301 Green Laser Pointer 50000mw(2 X Safety Keys)OR 1 x 301 Red Laser Pointer 50000mw(2 X Safety Keys)