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Linkind Smart Light Bulb UltraColor A21 Color+White 1600lm
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Linkind Smart Light Bulb UltraColor A21 Color+White 1600lm

Sale price  $27.99 Regular price  $49.99

51 reviews

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QUANTITY
key features
  • 【2.4G & 5G Compatible – Dual-Band WiFi 6 kills lag】When your home network gets crowded with 50+ devices, regular bulbs delay and disconnect. Our industry-first dual-band 2.4GHz & 5GHz WiFi 6 delivers higher bandwidth, faster response, and stronger anti-interference. Your lighting stays instantly responsive during intense gaming sessions and live streaming – no lag, no frustration
  • 【1000-20000K Wide Color Temp – For Every Moment】 1000K candlelight for dinners & decor. 2700K warm white for living room or study. 3500-4000K neutral for kitchen & makeup. 5000-6500K cool daylight for reading & projects. 10000-20000K vivid blue-white for gaming & parties. All in one bulb
  • 【ULTRACOLOR – Brighter and more vivid】Stop settling for dull, washed-out colors. UltraColor technology produces richer reds, deeper blues, and more vibrant greens. At 1600 lumens of true-to-life brightness, this A21 bulb transforms your space whether you are gaming, entertaining, or just relaxing at home
  • 【MATTER CERTIFIED + LUMISYNC COMPATIBLE – Future-proof smart ecosystem】Connect directly to your existing dual-band router Matter certification ensures seamless, secure, and reliable integration with Alexa, Google Home, and major smart platforms. Sync with LumiSync TV light strips for room-wide motion effects that follow what is on your screen
  • 【AI-POWERED CUSTOMIZATION – Just tell Dotis your idea】Say “cozy fireplace” or “cyberpunk gaming vibe” – Dotis turns your words into stunning custom lighting effects instantly. No complex app navigation. With 66+ preset scenes, music sync, and light show modes, you can also set schedules, group control multiple bulbs, and use voice commands with Alexa and Google Home
  • 【TIPS】This bulb is designed for 120 Volts systems. It is not compatible with wall dimmer switches (may cause flickering or buzzing)—adjust brightness via the AiDot/Matter app or voice control, and use a standard on/off switch. A hub is required for Matter connectivity. Not Compatible with Tuya & Smart Life. Thread Not Supported. LumiSync compatible with Linkind light strips only.
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101
Linkind Smart Light Bulb UltraColor A19 Color+White 1100lm

Specification

Light Type LED
Bulb Shape Size A21
Incandescent Equivalent Wattage 100 watts
Light Color 16 Million Color+Tunable White
Voltage 120 volts
Control Method Voice
White Brightness 1600 lumens
Wattage 14 watts

FAQs

How is the UltraColor A21 1600lm different from the A19 1100lm version?

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The A21 delivers 1600 lumens versus 1100 lumens from the UltraColor A19—about 45% more light output. It’s a better fit for larger rooms or spaces that need brighter everyday lighting, while keeping the same UltraColor, Matter, dual-band Wi-Fi 6, Dotis, and LumiSync features.

Does the UltraColor A21 work with both 2.4GHz and 5GHz Wi-Fi?

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Yes. It supports both 2.4GHz and 5GHz Wi-Fi 6 for more flexible setup and connectivity. It uses Matter over Wi-Fi; Thread is not supported.

What is the 1000K–20000K color temperature range useful for?

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Use 1000K–2700K for candle-like or cozy evening light, 3500K–4000K for everyday tasks, 5000K–6500K for reading and projects, and the higher blue-white range for gaming, parties, or dramatic lighting effects.

Does the UltraColor A21 work with Alexa, Apple Home, Google Home, and SmartThings? Do I need a hub?

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Yes. Matter allows it to work with major smart home platforms including Alexa, Apple Home, Google Home, and SmartThings. A compatible Matter controller or hub is required for Matter integration; AiDot is used for the bulb’s advanced lighting features.

What can I do with Dotis, LumiSync, scenes, and music sync?

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Dotis can generate custom lighting effects from prompts like “cozy fireplace” or “cyberpunk gaming.” You can also use 66+ preset scenes, music sync, schedules, group control, and LumiSync with compatible Linkind TV light strips.

Can I use the UltraColor A21 in any lamp or with a wall dimmer?

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Use it only in a fixture with enough clearance for an A21 bulb and a compatible 120V power system. Do not use it with a traditional wall dimmer; adjust brightness through AiDot, your Matter platform, or voice control instead.

  • 5 stars: 37 (73%)
  • 4 stars: 10 (20%)
  • 3 stars: 1 (2%)
  • 2 stars: 1 (2%)
  • 1 star: 2 (4%)
C
Candice Rose
Easy to set up and connect.

The app is really easy to use. They look pretty

B
BENJAMIN1987
Colors pop more than ours

So far works great. Used during a small birthday get?together. The colors pop more than our other brand. Not showroom stuff, but lively enough.

S
SETH BRYANT
So far so good!!

So far so good. Put it in our entryway and set a timer for mornings. Comes on before I head out.

S
SPENCER
Works well with Alexa

Works well and connected with Alexa easily, I like the bright neutral setting. Music sync was silly fun during a workout once.

A
Ava D.
Took two tries, then worked

Connected through Matter to my hub. Took two tries, then it synced across rooms. That seems to help

T
THOMAS1984
So easy to set up with Alexa

Bought these about a year ago and am very happy with them.

A
Armando R.
Using Siri is kinda addicting

Smart Bulbs,I use Siri to dim it when my hands are full. It responds fast enough. Kinda addicting.

Q
Quentin Gentry
Warm tone that flatters our table

We swapped our dining bulb. Warmer tone makes the wood table look nicer. Not yellow, just warm.

J
JESSICA1986
Group control works well

Group control in the app works, super bright and can change all different colors with tons of settings

M
MABEL OCHOA
Does what I needed

So far, it does what I needed: bright when I'm cooking, warm when I'm relaxing. Simple.

R
Reid
Dialed down brightness did the trick

At first I thought the colors were too intense. After dialing brightness, they look great. Just took a moment.

D
Duke-J.
Kids love the rainbow, warm for bedtime

Put it in a kid's room. They like the rainbow scene for a few minutes, then we switch to warm for bedtime.

K
Katherine Simmons
Kids loved it

We used for a holiday party. Kids loved it. Simple.

C
Clara
Wide beam with no dark spots

I would give these a 5 start. Wide beam covers the car and the storage bins. No dark pockets.

M
M.G.
Not so great app...

No matter iOS or Android, old or new devices, the app is slow

O
Olivia Carter
These bulbs are ok, but just ok.

It's just too low for anything other then mood lighting

A
Aubrey S.
Bright enough

Bright enough. That's all I needed.

N
Noah Cooper
Cozy look, not harsh

I love this product, looks cozy and not harsh at all.

A
Alana V.
Terrible! Do not buy

Sometimes they disconnect completely and won't work again

D
Dylan
Worth the money

well worth the money.We put it in a floor lamp next to the couch. I like dimming it way down for movies. No flicker that I can see.

H
Heath
Too bright for my pantry

Tooo Bright! Grabbed it for the pantry. Turns out I leave it at 80% most days. Full blast is a bit much in that tiny space.

D
Dane l
Works as described

Added it to Apple Home. Works as described

L
Lexi
Definitely recommend.

I love these lights.

D
Dylan Morgan
App setup took a while

Took longer than I wanted to add it to the app.

S
Samuel
Bulbs work better than expected.

They were just a little too tall for my fixtures, but the are amazing everywhere else.

N
NATHANIEL1989
Big upgrade in brightness

Installed one in the garage to replace an old 100W bulb. The extra brightness is the big win here. I can finally see the shelves in the back corner without pulling out a flashlight.

A
Ashley Peterson
Great. Very nice touch.

Perfect Smart Bulbs.Bright, colorful, easy to set up

A
Aaron Hughes
VERY satisfied with these smart bulbs!

Easy to use and comes with instructions

C
Colby Steele
Slightly taller neck, still fits

The bulb neck is a touch taller than my old one. Shade still fits, just closer to the edges.

B
Brady-C
Helps me fall asleep faster

Got one for the bedroom. Works Exactly as I'd Expect. I've been falling asleep faster.

D
Dina W.
Brighter sink cleanup

Put one above the sink. The brighter output makes cleaning up a bit less annoying. You can actually see the crumbs.

N
Nicole Scott
Took a minute to figure out

The app could label color temps clearer. I figured it out by sliding around.

N
Nathan
Color stays consistent

Been running it nightly for a month. No heat issues and the color stays the same. Some bulbs drift. This one hasn't.