1. Long lifespan 2. High efficiency 3. Environmental benefit 4. Good heat-transmittanc Base: E27 LED qty: 30 Voltage: 110/230V Power: 4.5±0.2W Color: white,warm white Wave length: 6000-6500K,2700-3500K LED lumen: 12-15lm Luminous flux: 290-315lm Beam angle: 60° Lifespan: 25,000h CE,RoHS corn light