Sonoff B1 Dimmer Wi-Fi E27 Smart LED Light Bulb, Works With Nest, Alexa, Google Home

Product Overview:
Sonoff B1 is white and color ambiance dimmable LED bulb with E27 screw base. 
The dimming led lamp can be dimmed or brighten via iOS/Android App. 
With the App, users can select White, then the light will become white ambiance, they can set color temperature from cold to warm and change the brightness from 1%-100%. 
If they select color, they can change color spectrum of the RGB bulbs to favourite atmosphere. 
There are four available scenes for the dimming LED bulb: rest, reading, party and casual. 
The Sonoff B1 E27 color LED bulb is compatible with Amazon Alexa(Amazon Echo, Echo Dot, Tap). 
Users can ask Alexa to dim or brighten, or adjust the colors of the led light bulb.
 
Product Features:
Remote ON/OFF
White & Color light
Color changeable
Color temperature adjusting
Dimmable brightness
Works with Nest
Works with Alexa
Works With Google Home

Product Specifications:
Lamp Base: E27
Rated Power: 6W
Typical Lumen Output: 600lm
Beam Angle: 120 Degree typical
Color Temperature: 2800K-6500K & RGB full color
Dimmable: Yes (via app/Amazon Echo/Google Home)
Wireless Standard: WiFi 2.4GHz
Rated Input Voltage: 90-260V AC 50/60Hz
Stand-by (Light off) power: 0.5W Max
Operating Humidity: 5%-90% RH
Operating Temperature: 0ºC~ 40ºC (32°F ~ 104°F )
Storage Temperature: -20ºC~ 80ºC (-4°F ~ 176°F )
 
Product Advantage:
No Hub Required – Connect the bulb directly to your Wi-Fi at home
Manage Remotely – Control your lights from anywhere with your tablet or smartphone the free eWeLink app (iOS, Android)
Color Changing Hue – Fine-tune colors for every occasion and adjust brightness as well as light appearance from soft white (2800k) to daylight (6500k)
Voice Control – Pair to Amazon Alexa and to enable voice control
Save Energy – Reduce energy use up to 80% without brightness or quality loss compared to a 60W incandescent bulb
Compatibility – Compatible with Android, iOS and Amazon Alexa

Works With Alexa:
You can ask Alexa to change color temperature, color and brightness for Sonoff B1.
 
Color temperature mapping:
Shades of White Color Temperature value (in degrees Kelvin)
warm, warm white 2200
incandescent, soft white 2700
white 4000
daylight, daylight white 5500
cool, cool white 7000 (if device can’t support 7000k, then max supported CT will be used)
Color temperature changing example:
Note: you can only change this in White light, if the light is in Color mode, please switch to White in the App first.
Alexa, change the {deviceName} to white
Alexa, make the {deviceName} warm white
Alexa, set the {deviceName} to daylight
Alexa, set the {deviceName} cooler
Alexa, make the {deviceName} whiter
Alexa, set the {deviceName} softer
Alexa, make the {deviceName} warmer
 
Color changing example:
Color words: red, yellow, green, blue, white, black, orange, pink, purple, gary, etc.
Alexa, set the {deviceName} to red
Alexa, change the {deviceName} to the color blue
Alexa, turn the {deviceName} green
 
Brightness changing example:
Alexa, set {deviceName} to 90 percent
Alexa, increase {deviceName} by 40 percent
Alexa, decrease {deviceName} by 40 percent
For more details, please read this blog.