This decorative Green LED MR16 Cluster light bulb uses only 2 Watts of electricity (equivalent to a 15W halogen bulb) saving up to 80% in energy costs. Offering a 50000 hour lamp life compared to the halogen alternative. A direct replacement for a standard MR16 bulb. Please note LED MR16 lamps require drivers of the appropriate voltage to operate and have limited compatibility with existing halogen transformers.