In almost all LED lamps, the LEDs are permanently installed and cannot be replaced by the user. Lamps with fixed bulbs are easier and therefore cheaper to produce than those with replaceable bulbs. When using LEDs, replacement during the normal service life of the lamp is normally not necessary, as the service life of LEDs is typically approx. 50,000h, which is many times longer than the service life of traditional lamps (incandescent lamp only approx. 1,000h, halogen lamp only approx. 2,000h).