1): Working Voltage: AC110-130 AC200-240 2): Diameter: 30CM 3): Ambient Temperature: -20 ~ 40 degrees Celsius 4): Ratting:85LM/W 5): Major reduction in power costs 6): No RF interference 7): Long lifetime 50, 000+ hrs (5+ years) 8): Low power consumption, high intensity 9): Color index e 85Ra 10):power factor e 86% 11):Ce&Rohs is available