This 12W Kosnic branded LED GLS lamp provides an equivalent output to a 75W Incandescent lamp while also producing a 4000K cool white colour. It is non-dimmable and comes with a standard sized E27 / ES cap which is a common fixture type in the UK. Over the course of the lamps average expected lifespan of 25000 hours it will generate savings on your energy bill vs a traditional lamp making it an ideal upgrade.