OverviewThe Green/Red laser pointer pen was influenced by temperature. In winter, if the temperature is low outside of the room, please warm up the laser pen for 5 minutes.Avoid direct eye exposure to laser beamPlease don't keep it open for a long time, otherwise easy to damage the light bulbIf you want to light the match, please adjust the focal length to the largest, and then match at a distance of approximately 10cm from the lamp holder, the thinnest part of the light, at first might do not know how to play, but the fact we tested it completely no problem to light match.How to Light Matches?Unable to light a matchstick because the beam is parallel light.Adjust the focus to enlarge the spot size.Find the Focus Point (the smallest spot size on the beam ), most powerful and capable of lighting a match.Keep out of the reach of children.DO NOT point directly at human or animals' eyes.Features:Color: Green/Red100% brand new high quality and perfect design.The actual photo showed, Simple and easy to use.Use your laser pointer to point at any desired targets on the projection screen, video.Across the sky, allowing you to find the stars in the fan days you want the stars, is the leader in the vast sky.Power saving, lightweight, suitable for putting in your pocket or handbags.This laser pointer can be used for presentation, teaching indicators, children's amusement, and more.This high-quality laser pointer adopts the latest technology optics and microelectronics.Laser range: 2000-5000meters.Focus mode: adjustable.Body material: aerometal.Specifications:Wavelength: 532nm (Green) or 650nm (Red)Beam style: continuous line.Spot size: 6M place <Ο10mm.Working voltage: DC=3.0-3.7V.Preheat time: < 3secondsWorking temperature: +15~+35Storage temperature: -10~+40.Package1x Green or Red Laser Pointer Pen1x USB cable