G4 cap size, 10W wattage, equivalent to a 12W incandescent bulb, Light output: 100 Lumens. Lumens are a measure of brightness., 2650k colour temperature. A colour between 2400-3000K is considered warm white & equivalent to traditional incandescent light bulbs., Energy rating: C, Less than 1 second light up time, with greater than or equal to 8000x switching cycles., Lifetime: 2000 hours, Suitable for use with dimmer switches