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Your TV, floating in soft light.

Cosari HaloSync 75

HaloSync 75 wraps all four sides of your TV in an even, glare-free glow.

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  • Fits 55–75" TVs on all 4 sides
  • No camera on your bezel
  • Thermal VHB tape + flex corners
  • Plugs into your TV's USB port
Cosari HaloSync 75
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Built for the living room, not the gaming den.

Calm white light when you want it and color when you don't, with nothing showing from the sofa.

Multi-Zone RGBIC Color

Each segment can glow a different color at once. Try gold down the sides fading into navy across the top.

6500K Eye-Comfort White

A dedicated cinema-white preset near the calibration standard reduces dark-room eye strain and makes blacks look deeper.

Zero-Tension Flex Corners

Braided jumper wires bridge every corner, so you never fold the strip and nothing pulls the tape loose.

USB Auto-Sync + RF Remote

Turns on with your TV and remembers your setting. The RF remote works from 15 feet without aiming.

How HaloSync 75 works

Corners that lie flat

Corners that lie flat

Cheap strips make you crease the ribbon at each corner, and that crease pulls the tape off once the TV warms up. HaloSync uses braided flex jumpers, so all four sides sit completely flat on the TV back.

132 LEDs, independently addressed

132 LEDs, independently addressed

RGBIC chips let each section of the strip show its own color, from 2700K candle amber through 6500K cinema white to deep sapphire. At 30 LEDs per meter, the wall shows an even glow and no dots.

Control it from the couch

Control it from the couch

Use the RF remote, the Bluetooth app, or switch on music mode and let the built-in mic follow your soundbar. Nothing to aim and nothing on the front of the TV.

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Cosari HaloSync 75

Smart RGBIC & 6500K TV Backlight Kit for 55–75" TVs. USB-powered, no bezel camera, corners that stay put.

Backed by our 30-Day Money-Back Trial & Full 2-Year Cosari Warranty.

$29.99 $59.99 Free Tracked Shipping Included

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30-Day Money-Back Guarantee plus a full 2-Year Warranty.

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Description

Why bias lighting helps your eyes: In a dark room, your pupils keep adjusting between dark scenes and bright highlights. A steady neutral glow behind the screen reduces those swings, which is why calibrators recommend 6500K bias light for home theaters. HaloSync's white preset is tuned to that target.

Installing on a wall-mounted TV: You don't need to take the TV down. Wipe the rear border with the included prep wipe, stick the four numbered segments about 2 inches inside the edge, add clips anywhere the surface is grooved, and plug the 1.2 m lead into a USB port on either side.

An honest limit: HaloSync reacts to your scenes and to sound, not to individual pixels, so it won't copy on-screen colors frame by frame like a camera or HDMI sync box. If your TV sits less than 1 inch from the wall in a recessed niche, the glow will spread less than on a standard mount or stand.

Shipping & 30-Day Returns

Free Shipping: Every order ships free with full tracking within 24 hours.

30-Day Trial: Try it at home for 30 days risk-free. Need help? Email us anytime at support@buycosari.com.

2-Year Warranty: If anything goes wrong within 2 years, we replace it free of charge or refund your order in full.

Why Choose the Cosari HaloSync 75?

Cosari HaloSync 75 Detail

Thermal VHB that holds at 158°F

TV backs often reach 108°F. Our 0.8mm acrylic VHB tape is rated far above that, so it doesn't soften and droop like paper foam tape.

Music mic built into the controller

The inline mic picks up your soundbar and pulses the light to the beat. You don't need an extra box or hub.

Nothing on the bezel

No camera arm, no IR tab, no power brick. From the sofa you see the glow and nothing else.

Cosari HaloSync 75 vs. Ordinary Alternatives

Cosari HaloSync 75Standard Competitors

FeatureCosari HaloSync 75Standard Competitors
Corners on a warm TVFlex jumpers, 0 mm liftFolded ribbon that peels
Front-of-TV hardwareNoneCamera arm or IR sensor tab
Power sourceTV USB port, 0.9A maxSeparate wall adapter
Bias-light whiteDedicated 6500K presetBluish RGB-mixed white
Total price$29.99$90 to $500+
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What's Included

In the Box
  • 1 × HaloSync 75 RGBIC LED strip set (4.4 m, 4 numbered segments, 3 braided corner jumpers)
  • 1 × Inline smart controller with music mic and 1.2 m USB-A lead
  • 1 × 17-key RF wireless remote
  • 1 × Mounting pack (6 reinforcement clips, 2 surface prep wipes, quick-start card)
Technical Specifications
  • Coverage: 4.4 m (14.4 ft), 4 pre-cut segments for 55–75" 16:9 TVs
  • LEDs: 132 RGBIC + white SMD at 30 LEDs/m, independently addressed
  • Color: 16M RGBIC colors, 6500K cinema white, 2700K warm amber
  • Power: USB-A 5V, 0.9A max (4.5W), no wall adapter required
  • Control: 433MHz RF remote (up to 15 m, no line of sight), Bluetooth app, built-in music mic
  • Adhesive: 0.8 mm thermal acrylic VHB, rated to 70°C (158°F)
  • Corners: 3 braided flex jumpers + 6 reinforcement clips
  • Strip width: 10 mm; USB lead: 1.2 m
Care & Safety
  • Before installing, power the TV off for 30 minutes so the back is cool, clean the border with the prep wipe, and let it dry for 60 seconds. Press each segment firmly along its full length for 10 seconds. The tape reaches full strength in about 24 hours.
  • Keep the strip off cooling vents. To reposition or remove it, warm the tape with a hairdryer on low, lift slowly from one end, and roll off any residue with your thumb. If your TV's USB port is rated 0.5A and the strip dims at full white, power it from any 5V/1A USB charger.
  • Backed by our 30-Day Money-Back Guarantee & 2-Year Warranty
  • Customer Support: support@buycosari.com
In the Box Cosari HaloSync 75

Set up in about 8 minutes

Swipe left for steps 2 and 3

  1. 1. Peel and press
    1

    1. Peel and press

    Wipe the TV's rear border, peel the red liner, and press each numbered segment flat. The corner jumpers handle the turns.

  2. 2. Plug into the TV
    2

    2. Plug into the TV

    Push the USB-A plug into your TV's rear USB port. No wall brick, no extra outlet.

  3. 3. Click and relax
    3

    3. Click and relax

    Tap the remote. Your TV lights up in an even halo and switches on with the screen from then on.

Verified Customer Reviews

What 200+ Verified Buyers Say About the Cosari HaloSync 75

Excellent Trustpilot
4.8
Based on 247 verified reviews
5 Stars
212
4 Stars
25
3 Stars
7
2 Stars
2
1 Star
1
97% of buyers recommend the Cosari HaloSync 75
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✓ Verified Purchase
Marcus V. — Austin, TX4 days ago

Zero corner peeling after a month on a textured Samsung backplate

My last cheap strip forced you to fold the ribbon 90 degrees at the corners, and that spring tension ripped the tape off the textured back of our 65" Samsung within two days. The braided corner jumper wires on the Cosari are the secret sauce—zero twisting, zero bulges, every single LED strip sits dead flat. Plus the RGBIC blending between teal and warm amber looks ten times higher-end than a single solid color.

Verified Purchase · Austin, TX · Cosari HaloSync 75

Customer photo
✓ Verified Purchase
jenna_k88 — Columbus, OH1 week ago

Everything you need is in the box, took 10 minutes flat

Just opened mine on the kitchen table before putting it on our 75-inch Sony in the den. They actually include alcohol prep wipes and extra black cable clips so the wire doesn't hang down over our oak credenza. The segments are numbered so you don't have to guess where to start, and the matte black PCB blends right into the back of the TV.

Verified Purchase · Austin, TX · Cosari HaloSync 75

✓ Verified Purchase
David R. — Seattle, WA1 week ago

Refused to hang a plastic webcam over my thin OLED

I looked at the camera-sync kits at Best Buy, and there was no way I was sticking a 5-inch plastic snorkel arm over the top of a 4mm-thin LG C3 OLED. I just wanted a clean bias light and smooth color washes without ruining the look of the TV. This gives an even, buttery halo around all four sides on our matte drywall with zero individual LED dots showing.

Verified Purchase · Austin, TX · Cosari HaloSync 75

✓ Verified Purchase
T. Hendriks — Naperville, IL2 weeks ago

Fixed my wife's dark-room movie headaches on night one

Watching HDR movies in a pitch-black living room used to give my wife eye strain in 20 minutes because the bright highlights are so intense now. Switching this kit to the 6500K neutral white setting at 35% brightness made the black bars look inkier and completely took the edge off the glare. Worth every penny.

Verified Purchase · Austin, TX · Cosari HaloSync 75

✓ Verified Purchase
Chris & Lauren M. — Raleigh, NC2 weeks ago

Plugs into the TV USB port and remembers our exact setting

Plugs right into the 5V USB port on the back of our TCL QM8, turns on about two seconds after the TV wakes up, and turns off when we shut the TV down. Best part is the memory chip—it doesn't reset to some crazy flashing disco mode every time the power cycles. It stays right on our saved warm gold scene.

Verified Purchase · Austin, TX · Cosari HaloSync 75

✓ Verified Purchase
Brian S. — Phoenix, AZ3 weeks ago

RF remote is so much better than those cheap infrared ones

Having an RF remote instead of infrared is huge—nothing has to hang below the bottom bezel for line-of-sight, and I can dim the backlight from under a throw blanket 15 feet away. Taking off half a star only because you have to let the alcohol wipe dry for a full minute before sticking the tape, otherwise it slides at first, so don't rush that step.

Verified Purchase · Austin, TX · Cosari HaloSync 75

✓ Verified Purchase
kyle_m_drums — Denver, CO3 weeks ago

Saved me $450 compared to the Philips Hue setup

Why does Philips Hue want nearly $550 between the gradient strip, Bridge, and Sync Box just to put ambient light behind a $700 TV? Grabbed the Cosari at 50% off and put it behind our 65-inch Hisense. The multi-zone color fades look super rich and we didn't need an extra wall plug or HDMI box cluttering the media console.

Verified Purchase · Austin, TX · Cosari HaloSync 75

✓ Verified Purchase
Stephanie L. — Tampa, FL1 month ago

Didn't even have to take our 65" TV off the wall bracket

I was dreading lifting our 65-inch Vizio off the wall mount just to put lights on the back. Because the four strips are pre-cut to length with corner jumper cables, I just pulled the bottom of the mount out five inches, wiped the edges, and pressed each side on in under ten minutes. Still stuck rock-solid three weeks later.

Verified Purchase · Austin, TX · Cosari HaloSync 75

✓ Verified Purchase
Devon P. — Minneapolis, MN1 month ago

Music mode during Saturday game nights is a huge hit

We use the calm 6500K white 90% of the time for Netflix, but we turned on the music sync mode on Saturday with Spotify playing through our Sonos Arc soundbar. The built-in mic picks up the bass cleanly without flickering during quiet parts, and three different friends asked what custom lighting system we had installed.

Verified Purchase · Austin, TX · Cosari HaloSync 75

✓ Verified Purchase
A. Morales — San Diego, CA1 month ago

Great fit on a 55-inch bedroom TV too

Bought two of these—one for the 70-inch in the living room and one for our 55-inch in the master bedroom. On the 55-inch the strips come right out near the outer edge of the back bezel, which actually gives an awesome wide throw on the wall. Super easy Bluetooth app setup with zero forced account sign-up.

Verified Purchase · Austin, TX · Cosari HaloSync 75

Make tonight's movie easier on your eyes.

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Frequently Asked Questions

Will one kit cover all four sides of my 55, 65, or 75-inch TV?

Yes. The 4.4 m strip comes in four numbered segments with trim marks for 55, 65 and 75-inch 16:9 TVs, so it wraps the top, bottom and both sides.

Does it turn on and off with my TV?

On TVs whose USB port switches off with the set, yes. It powers up with the TV and comes back on its last color and brightness. If your TV keeps USB powered in standby, use the remote's sleep button or set the auto-off timer in the app.

Is it safe to power from my TV's USB port?

It draws at most 0.9A at 5V (4.5W), which is within the limit of a standard 1A USB port. Some TVs supply only 0.5A per port. If yours does and the strip dims at full white, a regular 5V/1A phone charger will run it.

Will it stick to textured or curved TV backs?

The 0.8mm acrylic VHB tape held on the textured polycarbonate shells in our heat test. Six reinforcement clips are included for grooved or uneven areas. Clean the surface with the included prep wipe first.

Does it have a plain white mode, or only colors?

It has a dedicated 6500K cinema white for bias lighting and a 2700K warm amber, plus 16 million RGBIC colors and music-reactive modes.

Do I need to put a camera or sensor on the front of the TV?

No. The RF remote and Bluetooth app talk to a receiver hidden behind the TV, and the music mic sits in the inline controller. Nothing goes on the bezel.

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