90 percent less power consumption during hoped for multiple lifetime compared to a fluorescent tube! This LED lamp line costs several times a "normal" 50 cm fluorescent tube. The LED light is compared to the normal line lamp is significantly brighter - but from my View ncht uncomfortable. However, I have the lamp in the kitchen under the Wall cabinets mounted so that you can not look directly at the light source. The two plug-in contacts snap perfectly and are therefore fully compatible with the holder. However, the plastic tube in which there are the LEDs, 2 mm wider than the old glass tube. Possibly must be offset by 2 mm existing base. This is certainly rarely the case. The lamp was delivered very quickly.