Norb: Smart 2650-5000K A19
Norb Smart 2650 to 5000K A19 light bulb test results
The verdict
An adjustable LED A19 bulb. I measured 2 settings from 2690K to 5201K. Its color rendering runs from very good to excellent depending on the setting (CRI 94 to 97) and its body-clock signal runs moderate to very high (46% to 91% of daylight).
Use the warm setting in the evening and the cool one by day: the body-clock signal changes 2 times between them.
CRI 94 to 97
CRI Re by setting: 97 at 2690K, 94 at 5201K.
R9 95
Saturated red: skin, wood, food. 100 is perfect. #15 of 86 white-light bulbs.
2690K to 5201K
Sold as 2650 to 5000K. Gap from natural light 12 to 12%. Tint +0.0022, close to neutral.
46% to 91% of daylight
Melanopic DER by setting: 0.46 at 2690K, 0.91 at 5201K. Low is easier on sleep at night; high helps you feel alert by day.
The settings
Pick a setting. Everything below follows it.
How colors look
The red line pulls out where colors get more vivid and pinches in where they dull. Hover a bin for its numbers.
Where it ranks
Every white-light bulb I have tested, in its own light color. Left is warmer, up renders color more truly. Tap a dot to open that bulb.
This bulbOther bulbsFaded: discontinued
Truer color, same color temperature
No bulb I have tested near this color temperature renders color more truly. This one is the best I have measured here.
Similar bulbs
Still sold, near the same color temperature, same E26 base where one qualifies.
Specs
Power, brightness and efficacy marked "rated" are the manufacturer's numbers. I have not measured them yet.
- Brand
- Norb
- Model
- Smart
- Type
- LED
- Shape
- A19
- Base
- E26
- Finish
- Plastic
- Power (rated)
- 9W
- Brightness (rated)
- 806 lumens
- Efficacy (rated)
- 90 lumens per watt
- Dimmable
- Yes
- Sold as
- 2650 to 5000K
- Measured
- 2690 to 5201K (2 settings)
- Gap from natural light
- 12 to 12% (ASD)
- Tested
- Feb 7, 2023
- Instrument
- Handheld spectrometer (before the integrating sphere)
- Status
- Available