The lamps are absolutely outstanding at this price. Although they are slightly darker than 20 watts halogen, but for my purposes, ranging from over. I put the lamps in a 4- and a 5 Series spotlight. Who can expect is noted dasss I used 3 different lamps. The other lamps come from Norma and have also 4Watt. The lights that I bought here are almost as bright but actually a little warm white (beautiful) than the Norma lamps. And that at an unbeatable price. Now they must hold only long ... If I still need those types of lamp, then I would definitely stay here again access.