The verdict
A tunable white B39 bulb. Its white light is fair (CRI 83, Rf 86), it dims down to 0.7 lm, its warmest white is 2202K, and flicker risk is high.
The flicker is the problem. At full brightness it measured 65% percent flicker. I would keep it out of reading lamps, desks and rooms where anyone is flicker sensitive.
CRI 83 · Rf 86
Averaged over its warm, neutral and cool settings. #93 of 119 bulbs.
Down to 0.7 lm
Brightest white 343 lm. #4 of 119 bulbs.
Warmest white 2202K
mel-DER 0.32 at that setting. Daylight is 1.0. #64 of 119 bulbs.
Low risk at full, high risk at half
Graded against IEEE 1789.
Full brightnessHalf
The white settings
Pick a setting. Everything below follows it.
How colors look
At the selected setting. The red line pulls out where colors get more vivid and pinches in where they dull.
Flicker
Measured with a flicker meter at full and half brightness.
FullHalf
Where it ranks
All 120 bulbs. Left dims lower, up renders color more truly. Tap a dot to open that bulb.
This bulbOther bulbsHigh flicker riskDiscontinued
Beat it on both
No bulb I have tested dims lower and renders color more truly. This one is on the frontier.
Setup and specs
- Color mode
- Tunable white
- White range
- 2200K to 6900K
- Shape
- B39
- Base
- E12
- Dimming curve
- Logarithmic
- Max power
- 4.6 W
- Weight
- 45 g
- Firmware tested
- 1.116.3
- Tested
- Jul 26, 2024
- Features
- Power-loss recovery