Eveready 4.2W GU10 LED Bulb Warm White 3000K Non-Dimmable - 2 Pack

The Eveready GU10 is a 4.2W LED spotlight bulb delivering 320 lumens at 3000K warm white, supplied as a twin pack. Each bulb uses a standard GU10 twist-and-lock base and operates on 220-240V mains voltage, making it a direct retrofit replacement for 50W halogen GU10 spotlights in ceiling downlights, track lighting and recessed fittings across UK homes and commercial interiors.

Designed for fixed-output applications where dimming is not required, the bulbs suit kitchens, hallways, bathrooms (check IP rating for zones), retail displays and office spaces needing consistent warm-toned accent or task lighting. The 110-degree beam angle provides broader coverage than traditional 38-degree halogen spots, reducing the number of fittings needed to light a given area. Installation takes seconds — twist out the old halogen, twist in the GU10 LED, no rewiring or transformer changes required.

Each bulb measures 57mm height by 50mm diameter and weighs 40g, fitting flush into standard downlight housings without protruding below the ceiling line. The 3000K colour temperature produces a warm white tone comparable to traditional incandescent and halogen lighting, avoiding the cooler blue-white cast of higher-Kelvin LEDs. At 4.2W per bulb, a pair consumes under 9W compared to 100W for the equivalent halogen pair, cutting running costs by approximately 90% over the bulb's rated lifespan.

The bulbs carry an Energy Rating of G under the updated EU energy label scale introduced in 2021, reflecting the stricter benchmarks applied to all lighting products. While the label rating is lower than older A-rated products, the actual energy saving versus halogen remains substantial. The twin-pack format provides a spare bulb for multi-spotlight installations or staged replacement as existing halogens fail.

Can these bulbs be used with dimmer switches?

No. These GU10 LEDs are non-dimmable and must only be used on standard on/off switches. Installing them on a dimmer circuit may cause flickering, buzzing or premature failure.

Do these replace 50W halogen bulbs directly?

Yes. Each 4.2W LED provides comparable light output to a 50W halogen GU10 while using approximately 90% less energy. The GU10 base fits directly into existing halogen downlight fittings without modification.

What is the beam angle and how does it compare to halogen?

The 110-degree beam angle is significantly wider than the typical 38-degree beam of traditional halogen GU10 spots, providing broader wash coverage. This makes them better suited to general room lighting rather than narrow accent spotlighting.

Why is the energy rating G if it's LED?

The EU energy label scale was updated in 2021 with stricter benchmarks. Most LED bulbs now fall into E-G ratings under the new scale, but they still deliver the same energy savings versus halogen and incandescent bulbs as before the label change.