Ceiling lamp size: 27.5*3.1in/70*8cm. Power:50W. Color temperature: 3000-6500K. Dimmable. Lumens: 4000lm,Voltage: 110V. LED light sources can be used for more than 20,000 hours. Dimmable brightness and color to suit your needs. The color is changing gradually from warm white 3000K to cool white 6500K through remote control device.