Highlights Direct replacement Excellent energy efficiency Long lifespan and warranty Cool white light - 4000K Direct replacement This Osram T9 LED circular SubstiTUBE has the same G10Q connector as a fluorescent circular tube so that it can be used as a direct replacement. It's compatible with fixtures that have a conventional ballast (ones with a starter) and the starter you need is included too. It can also be directly to the mains. For this, the ballast needs to be removed and the starter is not required. Excellent energy efficiency This circular LED tube uses just 20 watts of power to replace a fluorescent circular tube that uses 32 watts. That means energy savings of 38%! It's better for your wallet, therefore, as well as the environment. It has an energy label of A+. Long lifespan and warranty The lifespan of 30,000 hours is more than 3 times longer than the lifespan of a typical circular fluorescent tube and, for extra peace of mind, an all-in warranty of 3 years is included too. Cool white light - 4000K This Osram T9 LED circular SubstiTUBE has a colour temperature of 4000K and emits a cool white light that provides a stimulating atmosphere.