Bulbs shape Type Item No.: SDGL01 Watt: 7W, 11W, 13W Volt: 220V-240V Base: B22/E27 Luminous: 50Lm-60Lm Render index: ?80Ra Color temperature: 6500K, 2700K Life time: 5000Hours, 8000Hours Packing: Color box, Blister or according your request Materials: 1. Tube: Pure three-prime color rare-earth tube with good coloration, high optical efficiency, energy saving and long life. 2. Shelly: Uses PBT plastic shell, flame and high temperature resistant. 3. Electronic components: uses famous enterprises products. The quality is stable. Features: 1.Comparing with general bulbs, it can save energy 80%, the lumens is up to 55lm/W. 2.The long average life hours exceed 8000hours. 3.The frequency is about 60KHZ.,non flashes, eye sight and health protection. 4.The coloration index is more than 80, the irradiations have good distortion, which will be comfortable for eyesight. 5.The voltage rang is wide (170V-250V). Its safe and reliable.