MR16 LED Bulbs, GU5.3 LED Light Bulbs, Equivalent to 50W Halogen Bulbs, 400lm 5W, 12V, 2800K Warm White 120° Beam Angle, Non-Dimmable, Pack of 4 [Energy Class A+]

My existing LED driver is rated for 20-60W. I bought this four-pack of bulbs which are rated at 5W each hoping that I'd be able to run all four of them on my existing driver (i.e. 4 x 5W = 20W). Alas, these bulbs actually proved too energy efficient and are pulling less than 5W each, meaning my existing driver isn't suitable for them.However, driver problems aside, they are great bulbs. Very bright and switch on instantly! I will replace my driver with a new LED driver rated for 0-30W or so.

Just fitted one of these. Well packaged. Nice warm white light, that seem very well made. Can't talk about lifespan, but don't doubt it will last years. Recommend.

Got these to replace my 50w Halogen bulbs and are very good, give out a good light. Only problem is they work in one bathroom but flicker after 10 min in other bathroom, so you may need to replace transformer with LED version if unlucky

Perfect replacement and they don't flicker. Nice bright light and don't get hot.

Got a pack of 4 as needed 4, but one of the bulbs flickers, and it is definitely the bulb not the socket as I tried it it in all the other sockets and it did the same, whereas the other 3 bulbs were fine. Pity no way of amazon just sending you one bulb as don't want to send the whole lot back!

Great product, delivered with in hours, and noticeably brighter than the existing bulbs. Really pleased and definitely recommended, great value as well, shops are charging 12 pounds for 3 of much less quality.

Good value - nice light - have all lasted well.

I received a 4 box of these this week, 2 of the 4 bulbs did not work, very disappointed.