Never Needs Changing Batteries :environmentally Friendly,operates on internal built-in rechargeable batteries 2-way recharge ability:Hang-crank dynamo power;Vehicles Cigarette Lighter Socket Power Comes From your Cranking Never needs replacing bulbs:LED bulb lasts over 50000 hours Ultra bright LED:5pcs (/) 10mm super LED 180 degree swivel head:Convenient for adjusting to see everywhere Handle with Fluorescent material:easy to get it in the darkness Strong magnet:Easy to keep everywhere Great for blackout,hunting ,camping,fishing &emergencies everywhere