Feit Electric ST21 Smart Spiral LED Filament Edison Bulb - Color

In this review of the Feit Electric ST21 Smart Spiral LED Filament Edison Bulb, the bottom line is simple: this 60W equivalent RGBW bulb is best for homeowners who want stylish, voiceenabled lighting with flexible color and schedule control. The biggest reason to buy is the combination of a decorative spiral filament design and full app and voice control, which makes it useful both as a visible accent bulb in uncovered fixtures and as a flexible smart bulb for everyday lighting routines.

Key Features

• WiFi control: Connects to a 2.4 GHz network so bulbs can be controlled from anywhere using the Feit Electric app for remote access and sharing with other users.
• Voice compatibility: Works with Alexa and Google Home Assistant to turn lights on/off, dim, and change color handsfree.
• RGBW color and tunable white: Offers millions of colors plus warm to cool white options to switch between mood lighting and functional daylight.
• Schedules and scenes: Group bulbs, set schedules or routines, and save scene presets that can activate by time, sunrise, or sunset for automation.
• Energy efficient: 60W equivalent output while using only 9 watts and rated to last up to 25,000 hours for long service life.
• Simple setup: Screw in the bulb and follow the app instructions - recommended to install within about 30 ft of your WiFi router for a stable connection.

Who It's For

This bulb suits people who want a decorative exposedfilament look but also want modern smart controls; it works well in pendant fixtures, wall sconces, and uncovered lamps where the spiral filament is visible. It is also a good pick for households already using Alexa or Google Home that want color options and scheduled automation without adding a hub.

Shoppers who need a mesh or 5 GHz WiFi solution, or who require perfect tunable white accuracy for professional color work, should consider other specialty lighting options. Also, those with routers farther than about 30 ft from fixtures should test connectivity before committing to multiple bulbs.

Pros & Cons

Pros

• Stylish spiral filament design that looks attractive in uncovered fixtures while offering smart functionality.
• Wide color range plus warmtocool white that covers both decorative and practical lighting needs.
• Energy efficient 9W operation with long expected life and compliance with safety standards.
• App and voice control enable remote operation, grouping, and automation for daily convenience.

Cons

• Some users report mixed connectivity and occasional flickering; placement within 30 ft of the router is recommended.
• Color and tunable white behavior receives mixed feedback from customers, so expectations should be moderate for precise color fidelity.

Specifications

Brand	Feit Electric
Bulb style	ST21 spiral filament Edison
Equivalent wattage	60W equivalent (uses 9W)
Connectivity	2.4 GHz WiFi, app control, voice assistants
Color options	RGBW color changing + tunable white
Rated life	25,000 hours
Warranty	1year manufacturer warranty

Our Verdict

The Feit Electric ST21 Smart Spiral LED Bulb is a good value for anyone who wants a decorative exposed filament look with modern smart features; its energy efficiency, app scheduling and voice control make it a versatile choice for living areas and fixtures where appearance matters. Be mindful of WiFi placement and occasional reports of flicker or mixed color performance, but overall it offers strong utility and style for the price.

Frequently Asked Questions

Does this bulb need a hub?
No, the bulb connects directly to a 2.4 GHz WiFi network and does not require a separate hub.

Will it work with Alexa or Google Home?
Yes, it is compatible with Alexa and Google Home Assistant for voice commands to turn on/off, dim, and change colors.

How close must the bulb be to the router?
For a reliable connection the bulb should be installed within about 30 ft of your WiFi router on a 2.4 GHz network.