NOTE:No Battery! NO charger! No Battery! NO charger!Brandnew High Power 532nm Adjustable Focus Green Laser Pen Attention: No Battery! NO charger! included Specification: Size:150mm*22mm*22mm. Net weight:100g. Body material:aerometal. Light Color:Green Body Color:Black Power supply:18650 Li Battery or 16340 li Battery (No Battery!) Laser range: 2000-5000meters. Focus mode:adjustable. Parameters: Wavelength:532nm. Beam style:continuous line. Spot size:6M place <10mm. Working voltage:DC=3.0-3.7V. Preheat time:<3seconds. Working temperature:+15DEG~+35DEG Storage temperature:-10DEG~+40DEG. 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. Package: 1 X Green Laser pointer 1 X Safety Keys (No Battery! NO charger）Warning: Do NOT point laser at people. There is danger of physical harm if beam is shined into the eyes. Children should only handle lasers under adult supervision. The laser is bright! Even in normal temperatures and daylight it is recommended to limit it to 30 seconds or less per use to avoid heat buildup. (especially the higher powered ones). Therefore， by purchasing these products YOU (the customer) accept all responsibly and liability to determine and fulfill the requirements and limitations of use or resale of these products in accordance with your country`s laws and regulations. In the event of resale， you also agree to include this notation in the product description， so that any potential buyer can also make an informed purchasing decision. In some countries， laser pointers such as this may be illegal to own and/or use