Features:High-quality material: Made of aviation aluminum alloy, strong and durable, not easy to break, and can be used for a long time;Children Safety: The flashlight comes with a children safety lock. When not in use, you can turn the switch key to the red-dot and pull it out to disconnect the power supply;Easy to use: On/off button, power lock protection key and anti-slip handle ensure stable holding, adjustables-focus, easy to useExquisite workmanship: This lasers pen has exquisite workmanship and excellent material, which can bring you a good use experience.MULTIPLE USES: This laserspointer can be used for presentations, teaching instructions, children"s entertainment and more.Notice:1.Actual color may be slightly different from the image due to different light effect2.Please allow 1-3cm deviation due to manual measurementMaterial: aluminum alloySize: about 15.8*2.2 cm/6.22*0.86 inchesWavelength: 532nmPower: 100mWBattery: 1*CR123 battery (not included)