The light source adopts single high power LED light source, imported high brightness semiconductor chips. Thermal unique and lamp shell design, effectively will heat conduction diffusion, thus decreasing the lamp in the body temperature, safeguarding the LED light-source 50,000 hours using life. According to every light 11-12 hours calculation, LED courtyard lamp needn’t to be replaced within 12 years. Use powerful LED light source and high efficiency imported LED driver. Compare with sodium lights, it can save electricity around 60% Input Voltage: AC85-265V /DC12-36V LED Light Source: 36 pcs * 1W Power: 36W LED Efficiency: 80-100Lm/W Initial Flux: >3760Lm (Natural White) , >3400Lm (warm white) Lifespan: 50,000 Hours