1.type:MR16; 2.working environment:-20~40℃; 3.storage condition:-40~85℃; 4.work frequency:50/60HZ; 5.limited voltage:AC12V±10%; 6.Input current:450mA±15%; 7.output power :3.9W±20%; 8.luminous flux:172LM±20%; 9.certificates:CE/ROHS;