Socket: E27 / GU10 / GU5.3 / MR16. AC 85-265V( E27 / E14 / GU10 / GU5.3 ). AC/ DC 12-24V( MR16 ). The durable LED spotlight is safe, effective and simple. The 3W LED light bulbs has long service life, and will result in money saved by lowered utility costs.