I needed to soft light a corner of my kitchen and after some research ordered two 3 watt, cool white, led down lights. They arrived within 2 days. They are an led light bulb incorporated into a polished silver metal unit connected to a small transformer. I fitted them into existing holes I had used from previous down lights and connected to mains wiring already in place. It took me half an hour to complete the task. They look really professional high quality light fittings. The light emitted is better than expected. I am delighted with the product and the service. If I was wanting to light a full room with these style of leds I would use higher power ones and probably in warm white.