GeekBuying.com has Xiaomi Yeelight RGBW E27 9W 600 Lumens Smart LED Light with Wifi on sale for $18.99.
Shipping is free.
16 million colors for choice
With high-quality LED lamp beads, the eyes are fully protected. At the same time, the color temperature in 1700K and 6500K, 16 million colors for choice
Freely adjust the color brightness
Can adjust the brightness according to your needs. Let the light change with your needs. (5300K above lighting allows better concentration)
Built-in WiFi module, you can connect to the WiFi without Gateway and smart control it by mobile phone via APP
APP lauguage setting
Change the language settting on your phone to English and then download Xiaomi Smart Home App, it will change the language of the APP to English as well
9W 600 lumens : 9 watts of ultra-low power can provide 600 lumens of brightness
11 yeasrs lifespan: an average of 9000 hours of light decline with only 8%
Support: iPhone, iPad, iPod, Android 4.3 and above devices that support BLE
System compatibility: the apple iOS, Android 4.3 or above