GU10 LED Spotlight Bulb 4.9W 44W-eq 120° 550lm IQ-LED - Cool White

This GU10 LED bulb is a directional spotlight with a twist-lock mains cap, drawing 4.9 watts to deliver 550 lumens at a 4000K cool white tone. It runs straight from the mains 220 to 240V supply, so no separate transformer or driver is needed, unlike the low-voltage GU5.3 / MR16 type it is often confused with. The 120 degree beam casts a broad, even pool of light rather than a tight focused spot, and a high Ra90 colour rendering keeps colours looking true. With its IQ-LED engine it replaces a 44W old bulb while only consuming 4.9W of power.

Built on the standard PAR16 spot format at 50mm diameter, the bulb suits recessed downlight fittings, track heads, accent and display lighting across kitchens, living rooms, hallways and retail spaces. The wide 120 degree spread makes it a practical choice for general directional cover rather than narrow highlighting, so a row of fittings washes a worktop, wall or shelving with consistent cool white light. Rated IP20, it is for dry indoor use only and should be kept clear of bathrooms, porches and any damp or outdoor location.

The bulb measures 50mm across by 55mm deep and weighs 44 grams, finished in silver to sit neatly in open or trimmed fittings. It carries a GU10 twist-lock cap that pushes in and turns to seat, and is rated for 25,000 hours of operation at an efficiency of 112 lumens per watt. This is a non-dimmable bulb, so it is best paired with a standard switched circuit. The cool white 4000K output is also available in other tones across the wider GU10 range.

Product Specification Sheet

Range Datasheet

Which fitting does this bulb need?

It has a GU10 twist-lock cap, the standard mains spotlight fitting found in most recessed downlights and track heads. You simply push it into the holder and twist a quarter turn to lock it in place. Note this is mains voltage and not the low-voltage GU5.3 / MR16 type, which needs a transformer.

What old bulb wattage does it replace?

The bulb itself draws only 4.9W but gives a light output equivalent to a 44W old halogen spotlight, producing 550 lumens. The IQ-LED engine reaches an efficiency of 112 lumens per watt, so you get the same useful brightness for a fraction of the running cost.

Is this bulb dimmable?

No, this is a non-dimmable bulb and should be used on a standard on/off switched circuit. Fitting it to a dimmer switch may cause flicker or shorten its life, so a plain switch is recommended.

What does the 4000K cool white tone and 120 degree beam suit?

The 4000K cool white gives a clean, neutral light that works well in kitchens, hallways and workspaces where clarity matters, and Ra90 colour rendering keeps colours accurate. The wide 120 degree beam spreads light broadly for general directional cover rather than a tight focused spot.