without battery!!!without battery!!!without battery!!!use 18650 batttery(package without battter、only laser)1.self-defense for night2.Reporting、 teaching、 tour guides 、travelers 、explorers indicator3.starry effect4.make funny with pet5.burning match(need to adjust the focus)6.Control Distance:10000meter Max 10000mw Output power type 1 green laser pointers type 2 laser pen light color green laser point Function 1 Military command or exercise lazer Function 2 Mining field laser Function 3 laser vert type 3 burning laser [Advantages]: 1 aviation aluminum alloy、 strong and durable; (2) with a child safety lock、 when not in use can be the key to go to the red dot at the switch after unplugged、 disconnect the power supply; 3 external focus、 easy to adjust the thickness of the light beam spot size; 4.18650 battery、 large capacity、 have purchased、 long life time; 5 pre-switch、 press energized、 release easy to use power; 6 import LD and accessories、 increased service life、 more than 10、000 hours; 7 built-in laser module to improve cooling、 collecting protection circuit board design (excellent improvement for the domestic current of the laser circuit board defects); NOTE: 1.Due to customs prohibit send batteries、 this product will not include batteries、hope you understand. 2. Avoid direct eye exposure to laser beam 3.Please don't keep open for a long time、 otherwise easy to damage the light bulb 4.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 t we tested it completely no problem to light match. Package: 1x Latest 10000mw Laser Pointer Pen