Fit for:1.Field travelers / climbers / explorers:For outdoor adventure, distant targets and instructions sent out distress signals to let your travel be more happy and safety, it is preferred equipment.2.Amateur astronomers:Used for astronomical refers to the star, green laser shot light green line is a very beautiful. Very suitable for used in the observation of stars at night, can accurately indicate the position of the stars.3.Mining field / construction personnel:Used for long-distance accurate instructions / buildings. Avoid close to the danger zone, Lets you live like a conductor kilometer away4.Tour guide:Attractions for the distance instruction, no matter how many group members behind you, you can clearly see your point to scenic spots5.Military command or exercise:When you want your subordinates shows you which direction the target in the air or in a distant hillside, you can also do hand gestures desperately? Of course not, you will be able to touch the green pen button pointing to the sky, to make your style surge. It Also can be used for the emergencies such as fire, flood, earthquake emergency site command. Tips: 1. Due to customs prohibit send batteries, this product will Not include batteries, hope you understand, Thanks!2. Avoid direct eye exposure to laser beam3. Please don't keep open for a long time, otherwise easy to damage the light bulb4. 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 we tested it completely no problem to light match. * Lightweight and handy, suitable for put in your pocket or handbags* Laser light color: Green* Output power: 5mW* Output wavelength: 532 nm/+-10* Press button for ON / OFF* Note: Avoid direct eye exposure to laser beam* Output mode: Constant Wave* Powered by one 18650 lithium batteryNote: The battery color is random Packing list:1 * Green laser pointer1 * Star cap1 * 18650 battery1 * EU charger