Specifically, these lamps here are built so small that they have found in the kitchen space in my hood.
LED typically turn these lamps as opposed to fluorescent tubes or energy saving bulbs immediately, so absolutely without delay with full brightness.
I can not report on the life of the lamps, but I'm using at the front door a larger LED lamp of the same design since more than 2 years flawlessly.
So I recommend this product without restriction. A great product.