E27 (ES) LED Filament Golf Bulb 2.2W 250lm - Warm White 2700K

This is a golf ball bulb with an E27 screw cap, built with LED filament technology inside clear glass. Two filament legs run up the centre of the glass and give the lamp the look of an old incandescent bulb while drawing 2.2W. It puts out 250lm at 2700K, which the pack describes as a 25W replacement, so it is a like for like swap for the small screw cap bulbs that used to sit in bedside lamps and modest pendants.

A golf bulb is narrower and shorter than a standard GLS, so it is the one to reach for where a shade is small, a fitting is shallow, or a full sized bulb sits proud of the glass. The clear glass means the filament is on show, which suits open shades, lantern style wall lights and glass pendants where the bulb is part of the look. Because 250lm is a modest output, treat it as a bulb for a bedside table, a hallway pendant or a pair of wall lights rather than the only light in a living room. The 320 degree spread throws light back past the cap as well as forwards, so a shade lights evenly instead of taking a cone of light at the ceiling.

The specification lists this bulb as non-dimmable, so put it on a plain switch: on a dimmer a non-dimmable lamp can flicker, buzz or fail early. The pack prints a 15,000 hour life and instant start, so there is no warm up wait when you flick the switch. Energy rating is E. IP20 means indoor, dry positions only. Each unit is one bulb and the minimum order is 10, sold in multiples of 10, which suits stocking up for a house full of small fittings. It sits alongside a dimmable B15 (SBC) LED candle bulb in the same 2700K warm white.

Will this fit my lamp?

It takes an E27 fitting, the larger screw cap also written as ES. Check the old bulb: if the thread measures about 27mm across, this is the right cap.

How bright is 250lm in real terms?

The pack calls it a 25W replacement, so think soft bedside or accent light. For a main room light you would want something nearer 800lm.

Can I put it on a dimmer switch?

No. It is listed as non-dimmable, and a non-dimmable lamp on a dimmed circuit can flicker, hum or fail well before its rated hours.

What does 2700K warm white actually look like?

It is the warm, slightly yellow light people remember from incandescent bulbs, flattering on wood, brick and warm paint colours in the evening.

Does the clear glass cause glare?

The filament is visible, which is the point of the look, but at 250lm it stays comfortable. In a fully open fitting at eye level, a shade still helps.

How many do I have to buy?

Each unit is one bulb, and the minimum order is 10 units, sold in multiples of 10, so you receive ten bulbs at the lowest order.