1. LED, High capacity Lithium battery, all in one controller. 2. Using Solar resources as power supply, which is a good resources is being endlessly proceed. 3. High capacity lithium battery: high power, long using time, weight, green resources, won't produce any harm 4. Using LED lighting, with no diffusive effect, with high luminous efficiency, coupled with two optical design, can be irradiated to a wider area, once again, improve the light efficiency, has achieved energy-saving purposes. 5. Aluminum housing, Anti-corrosion, can be adjusted to any circumstances. Welcome and I wish you a happy life, my friend.