Features: 1) Diameter: Φ2.0 , Φ2.2, Φ2.4, Φ2.6, Φ3.0, Φ4.0. 2) Length: 50 - 780mm. 3) Color Temperature: 5,400 ? 15,000K. 4) Working Life: 20,000 hr. 5) Durable on/off : above 100,000 times. 5) Power Consumption: 1-5W. 6) Low Heat Generation. 8) Brightness Adjustable. Remark : Customer design is welcome.