I received twenty of the new GU4/MR11 bulbs from SunFlux a few days ago. Specifications:

• EAN: 5710777110165
• Part number: 11016
• Power: 3 W
• Color temperature: 2700 K
• Lumen: 200
• CRI: >95
• Beam: 40°
• Dimmable: Yes
• Size: Ø35 – L41
• Life hours: 20.000

I don’t have the equipment to test if the bulbs live up to the specifications, but at least one of the specifications is incorrect: It’s not an MR11 bulb. Well, sort of. Almost. I’ve never had any problem with halogen bulbs of any brand, but these bulbs are too large to fit into my spots. Bummer! A 1 mm difference would probably have made it possible to fit the retaining ring clips into the spot.

I bought the bulbs because SunFlux suddenly, without notice, changed the specifications for the older GU4/MR11 bulb with EAN 5710777110158/part number 11015. It used to be:

• Power: 3 W
• Color temperature: 2750 K
• Lumen: 180
• CRI: >96
• Beam: 40°
• Dimmable: Yes
• Size: Ø35 – L43
• Life hours: 20.000

I actually received one of these, and four bulbs of the new version with these changed specifications:

• Color temperature: 2700 K
• Lumen: 200
• CRI: >92

So that’s how I found out – I didn’t get five identical bulbs, even though it was the same order. So they downgraded the CRI, but upgraded the efficiency a tiny bit. These bulbs are ugly, but at least they fit into standard MR11 spots. I’m not sure why they made a new version of the old bulb with almost identical specifications as the new one (except the lower CRI). We’ll see if part number 11015 is being phased out.

Perhaps time to go looking for a spot that has enough space for this bulb…