Never needs batteries, power comes from your winding. Just a few seconds of winding can provide continuous lighting 3 ways to power up Heavy duty dynamo windup generator; Rechargeable with 12V DC input (Vehicle's cigatette lighter socket, not included); Rechargeable with 12V AC/DC Adapter (Not included); Rubber coated handle, easy to take Ultra bright LED with more than 50,000 hours lifespan Mobile charger to most mobiles(Not included) Ideal for hunting, fishing, camping or any emergency. It is great for indoors and outdoors
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