... , high efficiency, pollution-free, . Construction: Aluminum Alloy. Solar panel: mono-crystalline silicon or polysilicon Battery: rechargeable, nickel-cadmium ... . Environmentally friendly, solar flashlight is a patented product, which can be use for 5 hours after exposed in the sun 6 hours, and ... , the latest light source is adopted, ultra bright LED, imported solar cells, and long life.