I am extremely impressed with these lights. My patio is 9'x12' and I bought 4 boxes. Each of the 3 sides of the patio has 3 lines of lights. I took them out of the box close to dusk and within an hour it was dark and they were lit up bright. I have had them for about a week now and they have been consistent. They are bright enough to provide a cozy atmosphere with no other lights. However, if I needed light to read or doing anything I would need additional lighting. I would definitely purchase again.