... 3. Long life span 4. Good heat dissipation ParametersLamp source : SHARP COB LED Interior lighting: Not-dimmable Ambient tempeRature: -20 ºC ~ ... , impact resistance, shock-proof, no lead, no mercury, no UV, no IR; 3, PWM constant current technology, high efficiency, ... and power, good power factor, high brightness efficiency; 5, LED light source of ultra high power, high brightness; Lowest attenuation ...