A:Answer Hi there, this is Kelly with Dyson. Thank you for your interest in the Dyson CSYS Desk Light. The LED bulb is not replaceable; however, it uses five times less energy than conventional halogen bulbs for up to 144,000 hours of sustained brightness. You should be able to enjoy many years of use out of this light, without the need to ever have to replace the bulb.
Best wishes,
Kelly
Dyson Customer Support
