E27 cap size, 100 degree beam angle, 11W wattage, equivalent to a 55W incandescent bulb, Light output: 280 Lumens. Lumens are a measure of brightness., 2700k colour temperature. A colour between 2400-3000K is considered warm white & equivalent to traditional incandescent light bulbs., Energy rating: B, Less than 100 seconds light up time, with greater than or equal to 10000x switching cycles., Lifetime: 10000 hours, Not suitable for use with dimmer switches