... heat dispention 4:LED dimmers orders led bulb lamp 3w Name:LED light bulb dimmable MECHANICAL SPEC. Housing: ... . Operationg Tenp.:-20~40 Centigrade Heat sink temperature: <55 Centigrade Ingress Protection:IP55 Average Life: ≥30,000 hours ... ,70-80lm,Cool white,90-100lm Epistar Brand 3w:warm white,96-110lm,Cool white,120-140lm ... .6lm,Cool white,93.9-100lm Cree Brand 3w:warm white,125.6-137lm,Cool white,159. ...