A round, flat ceiling light fixture glows with a gradient of colors, including pink, yellow, green, and blue, set against a plain light background.High flicker
Full color4" downlightDirect wire2100K to 7600K

GE Cync CFIXCNLR4CRVD 4" downlight full color smart bulb

Amazon

The verdict

A full color 4" downlight bulb. Its white light is excellent (CRI 93, Rf 90), it dims down to 1.5 lm, its warmest white is 2117K, and flicker risk is high.

The flicker is the problem. At full brightness it measured 75% percent flicker. I would keep it out of reading lamps, desks and rooms where anyone is flicker sensitive.

Tested Jul 12, 2024 · firmware 1.3.131 · how I test

How true is the white light?Excellent

CRI 93 · Rf 90

Averaged over its warm, neutral and cool settings. #15 of 119 bulbs.

608090100
How low does it dim?Dims low

Down to 1.5 lm

Brightest white 775 lm. #28 of 119 bulbs.

0.1 lm1 lm night light10100300
Is it good for evenings?Warm

Warmest white 2117K

mel-DER 0.44 at that setting. Daylight is 1.0. #45 of 119 bulbs.

1500K candle9000K blue sky
Does it flicker?High risk

Low risk at full, high risk at half

Graded against IEEE 1789.

Percent flicker
75% · 98%
SVM
0.87 · 1.31

Full brightnessHalf

How rich are its colors?Fair

66% of Rec. 2020

RGB brightness 0.3 to 105 lm. #54 of 65 color bulbs.

50%75%95%

The white settings

Pick a setting. Everything below follows it.

1500KCandleNeutralDaylight9000K
Spectrum
Melanopic DER0.44Body-clock stimulus per lumen. Daylight is 1.0, a candle about 0.2.
Brightness1.7 to 295 lm
Tint-0.0031
RosyNeutralGreen

How colors look

At the selected setting. The red line pulls out where colors get more vivid and pinches in where they dull.

Color Shift Map
TM-30 Rf80
TM-30 Rg109Slightly boosts saturation (100 is neutral)
CRI Re66
CRI Ra72
Not measured

Full color

The triangle is every color the diodes can mix. Hover a corner for that diode.

66%of Rec. 2020
0%75%90%100%
Color brightness0.3 to 105 lm
Diode spectra

Flicker

Measured with a flicker meter at full and half brightness.

75%percent flicker at full brightness
Low flicker
Not measured

FullHalf

Percent flicker
75% · 98%
Flicker index
0.277 · 0.412
SVM
0.874 · 1.306
PstLM
0.150 · 0.445
Assist Mp
0.162 · 0.315

Where it ranks

All 120 bulbs. Left dims lower, up renders color more truly. Tap a dot to open that bulb.

Night-light low and true color0.111010030060708090100Dimmest white (lm, log scale). Left dims lower.CRI, averagedPhilips Hue LTD017: 1.2 lm, CRI 89Philips Hue LTD016: 1.0 lm, CRI 89Philips Hue LCZ002: 0.8 lm, CRI 91Philips Hue LCY002: 0.8 lm, CRI 91Philips Hue LCO006: 0.8 lm, CRI 91Philips Hue LCO003: 1.6 lm, CRI 85Philips Hue LCG005: 0.7 lm, CRI 83Philips Hue LCG007: 0.8 lm, CRI 84Amazon Basics BRC0652CD: 58 lm, CRI 93Amazon Basics BRS0652CD: 72 lm, CRI 91Amazon Basics 11aSB-A800ST-Q1-WGN: 29 lm, CRI 86Amazon Basics 11aSB-A800ST-Q1-WZN: 15 lm, CRI 92TP-Link Tapo L510E: 18 lm, CRI 89Amazon Basics 11aSB-A800ST-Q1-WDN: 32 lm, CRI 91Philips Hue LTV005: 11 lm, CRI 89Philips Hue LTO005: 11 lm, CRI 89Philips Hue LTO004: 11 lm, CRI 89Philips Hue LTG006: 0.7 lm, CRI 79Philips Hue LWO006: 8.6 lm, CRI 81Philips Hue LTA008: 1.1 lm, CRI 80Philips Hue LWE005: 5.7 lm, CRI 78Philips Hue LWE006: 8.8 lm, CRI 90Philips Hue LWA025?: 42 lm, CRI 91Philips Hue LWG006: 9.0 lm, CRI 80Philips Hue LWA023: 11 lm, CRI 79Philips Hue LCD007: 0.9 lm, CRI 89Philips Hue LCD005: 0.9 lm, CRI 91Philips Hue LTA025: 1.6 lm, CRI 81Philips Hue LWA008: 95 lm, CRI 92IKEA Tradfri 204.391.94: 10 lm, CRI 84IKEA Tradfri 604.391.68: 8.5 lm, CRI 84IKEA Tradfri 205.182.47: 9.8 lm, CRI 94IKEA Tradfri 205.187.37: 26 lm, CRI 88IKEA Tradfri 105.455.00: 10.0 lm, CRI 87IKEA Tradfri 905.474.30: 6.9 lm, CRI 94IKEA Tradfri 205.187.42: 14 lm, CRI 87IKEA Tradfri 404.619.14: 9.0 lm, CRI 90IKEA Tradfri 604.413.45: 8.4 lm, CRI 90IKEA Tradfri 704.413.78: 8.0 lm, CRI 79IKEA Tradfri 905.412.73: 4.7 lm, CRI 89IKEA Tradfri 605.391.96: 5.8 lm, CRI 86IKEA Tradfri 705.415.18: 12 lm, CRI 94IKEA Tradfri 104.392.55: 8.2 lm, CRI 79TP-Link Tapo L535E: 13 lm, CRI 86TP-Link Tapo L530E: 16 lm, CRI 84EcoSmart 11PR38120RGBWH1: 57 lm, CRI 76EcoSmart 12BR4090WRGBWH1: 71 lm, CRI 92Philips Hue LCE001: 0.7 lm, CRI 90EcoSmart 11BR3065WRGBWH1: 37 lm, CRI 86Philips Hue LCS002: 49 lm, CRI 88Philips Hue LTE001: 0.7 lm, CRI 83Philips Hue LWS003: 59 lm, CRI 89Philips Hue LWV006: 12 lm, CRI 79TP-Link Kasa KL130: 21 lm, CRI 86TP-Link Kasa KL135: 21 lm, CRI 88TP-Link Kasa KL125: 36 lm, CRI 85TP-Link Kasa KL110: 11 lm, CRI 87innr AE 280 C: 44 lm, CRI 90innr AE 270 T: 29 lm, CRI 92innr BE 220: 17 lm, CRI 90innr AE 262: 4.5 lm, CRI 89innr AE 264: 5.8 lm, CRI 87Philips Hue LCD006: 1.0 lm, CRI 90Philips Hue LCA007: 1.5 lm, CRI 87Philips Hue LCA009: 2.7 lm, CRI 85GE Cync CLEDR309SD1: 49 lm, CRI 94Philips Hue LCB002: 1.6 lm, CRI 85Philips Hue LTB003: 1.7 lm, CRI 88Philips Hue LWA019: 52 lm, CRI 92Philips Hue LTV004: 12 lm, CRI 89Philips Hue LTA007: 11 lm, CRI 89GE Cync CLEDA199CD1M: 1.5 lm, CRI 91GE Cync CLEDA199SD1: 1.5 lm, CRI 92GE Cync CLEDR309CD1: 1.2 lm, CRI 91GE Cync CFIXCNLR6CRVD: 1.9 lm, CRI 93GE Cync CLEDG256CDGS: 2.1 lm, CRI 86GE Cync CLEDST196LDGF: 30 lm, CRI 90GE Cync CLEDG256LDGF: 31 lm, CRI 91GE Cync CLEDA2116CD: 4.5 lm, CRI 93GE Cync CLEDA199LD1: 41 lm, CRI 90GE Cync CLEDA199CD1: 1.4 lm, CRI 92GE Cync CLEDA199CDEN: 1.1 lm, CRI 93GE Cync CLEDP3815CD1: 47 lm, CRI 83GE Cync CFIXRSCR6CRVD: 1.5 lm, CRI 93GE Cync CLEDR309CDRV: 1.3 lm, CRI 93GE Cync CLEDA199LDRV: 46 lm, CRI 90GE Cync CLEDST196CDGS: 1.6 lm, CRI 87GE Cync CLEDBM6LDGF: 30 lm, CRI 90GE Cync CLEDBC6LDGF: 29 lm, CRI 90GE Cync CLEDR309CDEN: 0.7 lm, CRI 93Govee H601C: 47 lm, CRI 78Govee H601D: 37 lm, CRI 78Govee H601A: 44 lm, CRI 92Govee H601B: 186 lm, CRI 92Govee H600A: 186 lm, CRI 93Govee H6006: 129 lm, CRI 93Govee H6001: 7.3 lm, CRI 76Govee H6008: 102 lm, CRI 85Govee H6010: 133 lm, CRI 87Nanoleaf NL65N100: 1.1 lm, CRI 93Nanoleaf NL53E100: 1.3 lm, CRI 91Nanoleaf NL54U000: 0.6 lm, CRI 80Nanoleaf NL67E100: 2.0 lm, CRI 93Wyze WLPBR30C: 18 lm, CRI 89Wyze WLPA19V2: 58 lm, CRI 93LIFX LXDL6CUS: 4.3 lm, CRI 79LIFX LCCE12US: 0.6 lm, CRI 74LIFX LCDDE12US: 3.1 lm, CRI 92LIFX LHBR30E26IRUS: 8.1 lm, CRI 77LIFX LHBR30E26US: 8.5 lm, CRI 78LIFX LFXPAR381600RGBW: 6.6 lm, CRI 66LIFX LFXA211600RGBW: 6.6 lm, CRI 73LIFX LHLA19E26US: 8.1 lm, CRI 75LIFX LHLA19E26UVUS: 8.4 lm, CRI 71Philips Hue LCA005: 1.1 lm, CRI 87LIFX L3A19LW06E26US: 5.7 lm, CRI 93LIFX L3A19LC08E26US: 6.0 lm, CRI 77Wyze WLPA19CV2: 18 lm, CRI 86This bulb

This bulbOther bulbsHigh flicker riskDiscontinued

Beat it on both

Still sold, dims lower and has truer color, without high flicker.

GE Cync CLEDR309CDENCRI 93 · 0.7 lm · BR30 · $25GE Cync CLEDR309CDRVCRI 93 · 1.3 lm · BR30 · $20

Similar bulbs

Still sold, same Direct wire base.

Low flickerDims lowerPhilips Hue LCD007CRI 89 · dims to 0.9 lm · $58

Setup and specs

Connects byWi-FiBluetoothZigbeeThread
Works withApple HomeAmazon AlexaGoogle HomeSmartThingsMatter
Color mode
Full color
White range
2100K to 7600K
Shape
4" downlight
Base
Direct wire
Dimming curve
Logarithmic
Max power
12.4 W
Weight
165 g
Firmware tested
1.3.131
Tested
Jul 12, 2024