Lightweight, compact and engineered to withstand extreme conditions and use. This bright LED cap light has 5 ultra bright white LED bulbs inside. Put 3pcs AA dry batteries into lamp can power it. (Not include) Can be easily and conveniently controlled with the packaged remote controller. Portable and easy to mount. Powered by 4 pieces lithium coin cell batteries. The fresh batteries can last 48 hours high intensity burn time continuously using. The life of the LED's is more than 100,000 hours. This LED cap light is also water resistant, shock proof. It is ideal for car repair and home use.