851 50mw 532nm Green Laser Pointer Pen Visible Beam

851 50mw 532nm Green Laser Pointer Pen Visible Beam  Features: 1. Perfect for teachers; students; engineers; doctors; managers and more 2. It's more convenience that use laser point to the target instead of hands 3. Use your laser pointer to point at any desired targets on projection screens; video monitors; and presentation graphics 4. Lightweight and handy design; it' very convenient to put in bags or pockets 5. Useful kit for handy torch; office/school presentation; etc. Specifications: Weight: 90g Power Control: APC Laser Wave Length: 532nm; Green Power Supply: 1 x 16340 Battery(not included) Material: Copper + Aluminum Control Distance: 500m ~ 10000m Operating Voltage: DC=3.7V Starting Voltage: DC=3.7V Working Current: I<350mAh Operating Temperature: +20_?~ +30_?Storage Temperature: +10_?~ +40_? Note: 1. Avoid children contact and use. 2. Avoid directing eye exposure to laser beam. 3. Please don't keep open for a long time; otherwise easy to damage the light bulb.   Package Content:1 x 851 Green Laser Pointer(Battery not included)1 x Hand Strap