GU10 LED Spotlight Bulb 4.7W 345lm Dimmable - Warm White 2700K

This GU10 spotlight carries three colour temperatures in one lamp. A small switch on the body sets the light to 2700K, 4000K or 6500K, so the same bulb gives you a warm white, a neutral white or a crisp daylight white. It draws 4.7W for 345 lumens, and the pack rates that as a 50W halogen replacement. The cap is the standard GU10 twist and lock two pin, the fitting used in most UK downlights, track heads and small spotlights, so it drops straight into a holder that currently takes a halogen or an older LED GU10.

The switch is set by hand on the lamp itself, so treat it as a choice you make at installation rather than something you change from the wall. That is genuinely useful when you are finishing a room and have not settled on a white: fit the lamps, live with 4000K over the kitchen worktop for a week, then take one down and drop it to 2700K if the room feels too clinical. The pack describes the 345 lumens as falling in a narrow cone, so the light lands as a defined pool rather than washing the whole ceiling. That suits worktops, shelving, artwork and hallway runs, and it is worth spacing the fittings a little closer if you want even coverage across a large floor.

The pack marks the lamp as dimmable. LED loads are small, so if you are keeping an old halogen dimmer, check its minimum load before you fit a full ceiling of them; a trailing edge LED dimmer gives the smoothest result. Energy class F is printed on the pack, along with a 15,000 hour rating and a 15 year lifespan. Each box holds a single lamp, and the minimum order on this listing is twelve.

Will this fit the downlights I already have?

If the bulb you are taking out has two small pins and twists in with a quarter turn, it is a GU10 and this lamp goes into the same holder with no rewiring.

How do I change between 2700K, 4000K and 6500K?

A small switch on the body of the lamp selects the setting, so you choose the white by hand at the lamp rather than from the wall switch.

Will it work on a dimmer?

The pack marks it as dimmable. Older halogen dimmers often need a minimum load, so a trailing edge LED dimmer is the safer choice with lamps of this wattage.

How much light is 345 lumens in practice?

The pack sets it against a 50W halogen spot, and the beam is a narrow cone, so it reads brighter on a worktop directly below than the bare figure suggests.

Does the manufacturer state an IP rating?

No IP rating is printed on the pack and none is given in the specification, so none is listed above. Check the rating of the fitting the lamp goes into.