Circadian Energy Enhancing LED Bulb, A19 – Universal Companies
Amazon.com: TUO Circadian Health LED Smart Bulb – Better Sleep and Energy - New 'Dawn Detector' Cell Targeting Light Technology - Custom Circadian Schedule - E26, A21, Wi-Fi, App Control, No hub :
Amazon.com: NorbSLEEP - Low-Blue Light Bulb for Bedtime and Evening, for Restful, Healthy Sleep for All Ages (Baby and Adults) (9W 1 Pack) : Health & Household
ERIA 60-Watt Equivalent A19 Dimmable CRI 90 Plus Wireless Smart LED Light Bulb Multi-Color (2-Pack) 818092P
Circadian Rhythm Lightbulbs : TUO smart bulb
Healthe's circadian bulb changes spectral output in response to the sun's position | LEDs Magazine