E27 LED Golf Filament Bulb 5W 550lm Dimmable - Warm White 2700K

This is a golf ball bulb: the small round shape, noticeably more compact than a standard household lamp, that suits fittings where a full size globe looks bulky. It takes an E27 screw cap, the larger of the two Edison screw sizes, and draws 5W to give 550 lumens. Inside the clear glass sit straight LED filament rods, so the light source itself is part of the look rather than something to hide behind a shade. The colour temperature is 2700K warm white, the soft yellow leaning light most people associate with a traditional filament lamp.

Clear filament bulbs earn their place where the bulb is on show: pendant clusters over a dining table, a bare flex drop in a hallway, wall lights with open shades, and the sort of small table lamp whose shade stops short of the cap. The golf shape keeps the visible glass compact, which matters in a multi lamp fitting where five or six full size globes would crowd one another. At 550 lumens it is a comfortable single lamp light for a bedside or a landing, and several run together over a table build up to a useful working level.

It is dimmable, so it can be paired with a trailing edge LED dimmer. If an existing dimmer was chosen years ago for incandescent lamps, check its minimum load suits a 5W bulb, because one lamp on its own may sit below it. The pack states a 40W replacement, so it is a like for like swap for the old 40W golf balls that sat in the same lampholders, and it prints a 15 year lifespan at 15,000 hours. The energy rating is E. Each box holds one bulb and the minimum order is 12, sold in multiples of 12, which suits fitting out a whole run of pendants in one go.

How do I know my fitting takes an E27 cap?

Look at the base of the old bulb. E27, also called ES or Edison screw, is the larger screw thread at roughly 27mm across; the smaller 14mm screw cap is E14 and will not fit here.

Will it work on my dimmer switch?

It is a dimmable lamp and works best on a trailing edge dimmer rated for LED loads. An older dimmer sized for incandescent bulbs may need more than one 5W lamp on the circuit to run smoothly.

How bright is 550 lumens in practice?

Brightness is measured in lumens rather than watts now. The pack rates 550 lumens as a 40W replacement, so it matches the old 40W golf balls used in pendants, wall lights and small table lamps.

What does 2700K warm white look like?

2700K is the warm, slightly golden light of a traditional bulb. It flatters wood, brick and warm paint colours, and it is the usual choice for living rooms, bedrooms and hallways rather than 4000K or 6500K.

Is an IP rating given for this lamp?

The manufacturer states no IP rating, so treat it as an ordinary indoor bulb for dry interior rooms in open or enclosed lampholders. Where a rated lamp is needed, choose one that prints an IP figure.