The lamp is very compact - which is significantly smaller than an old light bulb. It is also quite difficult. If a desk lamp has a normal light bulb love hangs his head, then this little thing already pulling them down significantly. In addition, just not bright enough for a desk - and dadruch a clear yellowish light. Better the next strongest version with 7.5 Watt take the rocks! Otherwise it does not flicker, almost instantly and noiselessly from 30cm distance.