E27 (ES) LED Golf Bulb 4.2W 470lm Dimmable - Cool White 4000K

This is a golf ball LED bulb on the E27 screw cap, drawing 4.2W and giving 470 lumens. The golf ball shape is the small round envelope that sits between a candle and a full-size GLS bulb, so it fills a shade without crowding it. The finish is opal rather than clear, which spreads the light and keeps the diodes from showing as bright points through a thin or open shade. Energizer print a 40W replacement figure and a 15 year lifespan on the retail pack, and the pack carries an energy rating of E.

E27 is the larger of the two screw caps used in the UK, often written as ES. If you are replacing an existing bulb, unscrew it and look at the base: an E27 thread measures about 27mm across, while the smaller E14 is closer to 14mm. Golf ball bulbs on this cap turn up in bedside lamps, small pendants, wall lights and multi-arm fittings where a full GLS would sit proud of the shade. At 4000K the light is a cool white: cleaner and slightly blue against the yellower 2700K warm white, which suits kitchens, home offices, utility rooms and anywhere you want to see detail clearly rather than settle in for the evening.

The bulb is dimmable, and the pack marks it so. Dimmable LEDs still need a compatible dimmer; older resistive dimmers built for filament loads often flicker or buzz at the bottom of their travel, so check the dimmer's minimum load against a 4.2W lamp before fitting several on one circuit. Each box holds one bulb, and the minimum order is 12, sold in multiples of 12. Our wider range runs to candle shapes on the B15 (SBC) cap in the same 4.2W 470lm cool white 4000K, along with 4000K tube and PLL types for strip and compact fittings.

How do I know my lamp takes an E27 cap?

Take out the old bulb and look at the base. E27 is a screw thread roughly 27mm across; if the thread is nearer 14mm it is an E14 and this bulb will not fit.

Will it work on my existing dimmer switch?

It is a dimmable lamp, but the dimmer has to suit LED loads. A 4.2W bulb draws very little, so an older filament dimmer with a high minimum load may flicker or hum.

How bright is 470 lumens in a real room?

The pack rates it as a 40W replacement, so it suits a bedside lamp, a small pendant or one arm of a multi-light fitting rather than lighting a whole living room alone.

What does 4000K cool white actually look like?

It is a clean, neutral white with none of the yellow cast of 2700K warm white. Mixing the two in one room is noticeable, so keep a fitting all one colour temperature.

Is an IP rating given for this bulb?

No. The manufacturer's specification does not state an IP rating and none is printed on the retail pack, so we make no protection claim for it.

How many bulbs do I receive, and is there a minimum order?

Each box contains a single bulb. The minimum order on this listing is 12 boxes, and it is then sold in multiples of 12.