Long distance military grade Red laser

NOTE:1. Avoid direct eye exposure to laser beam.2. Please don`t keep open for a long time, otherwise easy to damage the light bulb.3. If you want to light match, please adjust the focal length to the largest and then match at a distance of approximately 10cm from lamp holder, the most thin 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.4. It can burn only BLACK match,can not burn paper or something else.5. In winter, if temperature is low outside of room, please warm up the laser pen inside room for 5 minutes.,