LED lamp LUMEN STAR SMD E27 warm white, 11 Watt, 1100 lumens was used by me in the stairwell and in the exterior lighting of an apartment building. The brightness is equivalent to a 100 watt bulb. The luminous warmth is rather white rather warm white, but comes to meet us very. The delay is a bit longer than the conventional bulb. All roommates are very pleased with the new lighting. The product can be recommended without restriction.