GY GU10 LED Bulb 4.9W 790lm Cool White 6500K Energy Saving LED Bulb, The New UK Energy Efficiency Class B Replaces 80W, 110°B
Product details checked 5 September 2026 · price checked live
Check price on Amazon →Overview
GY GU10 LED Bulb 4.9W 790lm Cool White sits in our light bulbs listings, where we rank by how buyers actually rate a product rather than by brand. The manufacturer says: - GY GU10 LED bulbs are class B energy efficient, far better than other EF energy efficient bulbs, with an output of 4.9W, more than conventional bulbs 5W/6W/7W/8W. - The GY GU10 LED 4.9W 790LM bulb is our new technology that meets the new European Standard Class B for energy efficiency, producing higher brightness at lower power levels. Those are the seller's own claims rather than our testing, so treat them as a starting point. On Amazon it holds 4.6 out of 5 from 1,870 ratings. What that score is worth next to its rivals is set out below.
- Brand
- GY
- Amazon rating
- 4.6 / 5 from 1,870 ratings
- vs Light Bulbs
- level with the category median of 4.6
- Rank in category
- 21 of 49 rated light bulbs we track
- Price position
- Towards the top of the range (category spans £4.49 to £64.99)
- How proven
- Moderate review volume
Price range as of · details
How it compares in Light Bulbs
Across the 49 rated light bulbs products we track, the typical score is 4.6 out of 5. This one sits at 4.6, which is around the middle of the category. Ratings alone will not separate it from its rivals here, so price and the specifics below matter more than the star count.
It carries 1,870 ratings against a category median of 2,500. That is enough of a base to take the score seriously without treating it as settled.
On price it sits in the upper third of a category running from £4.49 to £64.99, where the midpoint is about £10.99. Paying above the category norm needs a reason beyond the rating, because the score alone does not justify the gap here.
Category prices as of · details
Worked out from the 49 light bulbs products in our catalogue, not from the brand's own claims. How we rank →
Key features, as the manufacturer lists them
Taken from the product listing via Amazon's product API. These are the seller's claims, not our test results.
- 【More Energy Efficient LED Bulbs】- GY GU10 LED bulbs are class B energy efficient, far better than other EF energy efficient bulbs, with an output of 4.9W, more than conventional bulbs 5W/6W/7W/8W, replacing 80W halogen lamps, saving up to 93.8% of the cost of electric lighting.According to the calculation comparison, the 80W halogen lamp can only last 12.5 hours for one degree of electricity consumption, while the GY 4.9W GU10 lamp can last 204 hours.
- 【Class B Energy Efficiency】- The GY GU10 LED 4.9W 790LM bulb is our new technology that meets the new European Standard Class B for energy efficiency, producing higher brightness at lower power levels. Whereas a normal Class E GU10 LED 5W can only achieve 500LM, a GY GU10 4.9W bulb can achieve 790LM, which is equivalent to the luminous flux of a normal Class E 8W bulb, saving energy while being brighter.
- 【Protect Your Eyes】- GY GU10 4.9W bulb for 220-240V AC input voltage, 6500K cool white light, 790 lumens, 110 degree beam angle, instant illumination, no flicker, no glare, better protection for your eyes (note: do not look directly at the bulb when it is working).The GY GU10 4.9W bulb produces low heat when working and the body of the lamp does not get as hot as other bulbs.
- 【Colour Rendering】- Colour rendering index >80, which ensures vivid visual enjoyment with original colours compared to other products below 80. Note: This bulb is non-dimmable and is not compatible with any dimmers.
- 【Customer Service】Guaranteed quality, up to 25,000 hours service life, less replacement.Reduces the hassle of replacing bulbs and also reduces the combined cost of using.
