Verilux HappyLight · $ · Updated March 3, 2026
Alba
Ranks #39 of 57 for melanopic output, below the 10,000 lux benchmark at 1 ft. No flicker at full power.
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Is it strong enough?#39 of 57
No. Only 27% of the 10,000 lux benchmark at 1 ft.
2,745 m-EDI at 1 ft · 755 at 2 ft
Is it comfortable to sit in front of?Standard
Mostly. Moderate glare.
103 at 1 ft · 29 at 2 ft · median 112
Does it flicker?No risk
No, at full power. Dimmed not tested.
2.2% modulation at max
Flicker index
0.0042
SVM
0.045
What does the light look like?5300K
Cool daylight, decent color.
CRI Re 86 · R9 40 (weak deep reds)
2700K warm7500K cool
All test data
Light outputMeasured at 1 ft and 2 ft
m-EDI
2,745
755 at 2 ft
Lux
3,215
900 at 2 ft
CLa
4,500
1,130 at 2 ft
Glare
103
29 at 2 ft
m-EDI 2,745 at 1 ft, 755 at 2 ft
Median 3,43010,000 benchmark2 ft1 ft
Glare 103 at 1 ft, 29 at 2 ft
Median 1122 ft1 ft
SpectrumOutput at the highest setting
Melanopic DER
0.85
m-EDI per lux. Daylight (D65) is 1.0.
CCT
5300K
3 levels
Gap from natural light
27%
Far. Average spectral difference (ASD) from daylight at the same color temperature, 425 to 690 nm.
Lamp outputBody-clock zone (melanopic, CIE S 026)Natural light, same color temperature
FlickerGreen is safe, amber is acceptable, red is past the limit
Full powerDimmed not tested
Percent flicker
2.2%
Flicker index
0.0042
SVM
0.045
PstLM
0.012
Assist Mp
0.009
Waveform, 1 second
A flat line near 1.0 means steady light.
Color renderingHow accurately colors and skin tones look under this lamp
CRI Re
86
R9 (deep red)
40
TM-30 Rf
87
TM-30 Rg
96
Slightly desaturated (100 is neutral)
Specifications
- Form factor
- Desktop
- Brightness
- 4 levels
- Color temperature
- 3 levels
- Power
- 20 W
- Voltage
- 100-240V
- Cord length
- 5.8 ft
- Mounting
- None
- Extra features
- Built-in timer
- Available in
- United States, Canada, United Kingdom
