1, Can work in rainy days up to 3-5 ... Panel240W, monocrystalline or polycrystalline, conversion efficiency: 15%Light Source60W, individual CREE LEDs, 3480 lumens, 1.5 footcandles on the ... reach 110 lm/w.2. good stability can work under all kind of environment3. advance structure lead ... capacity, with a 5-year warrantyLED Light: CREE LEDs provide super-bright light from little power, need simple thermal ...