---
product_id: 542566026
title: "Lytmi Fantasy 3 TV Backlight Kit HDMI 2.1 with Sync Box Wi-Fi for 65-70 inch 8K 60Hz Color Lights Compatible Alexa and Google Assistant, App Control, Music RGB (Red, Green, Blue) LDD21"
brand: "lytmi"
price: "2900 Lei"
currency: RON
in_stock: true
reviews_count: 9
category: "Lytmi"
url: https://www.desertcart.ro/products/542566026-lytmi-fantasy-3-tv-backlight-kit-hdmi-2-1-sync
store_origin: RO
region: Romania
---

# Music-responsive RGB lighting 72 LEDs/meter for ultra-bright lighting 8K 60Hz HDMI 2.1 Sync Box Lytmi Fantasy 3 TV Backlight Kit HDMI 2.1 with Sync Box Wi-Fi for 65-70 inch 8K 60Hz Color Lights Compatible Alexa and Google Assistant, App Control, Music RGB (Red, Green, Blue) LDD21

**Brand:** lytmi
**Price:** 2900 Lei
**Availability:** ✅ In Stock

## Summary

> ✨ Light up your screen, level up your life! 🎮

## Quick Answers

- **What is this?** Lytmi Fantasy 3 TV Backlight Kit HDMI 2.1 with Sync Box Wi-Fi for 65-70 inch 8K 60Hz Color Lights Compatible Alexa and Google Assistant, App Control, Music RGB (Red, Green, Blue) LDD21 by lytmi
- **How much does it cost?** 2900 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/542566026-lytmi-fantasy-3-tv-backlight-kit-hdmi-2-1-sync)

## Best For

- lytmi enthusiasts

## Why This Product

- Trusted lytmi brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Next-Gen Visual Sync:** Experience pixel-perfect backlighting that instantly mirrors your screen with zero lag, elevating every gaming and movie moment.
- • **Smart Home Integration:** Control your ambiance hands-free with Alexa and Google Assistant compatibility plus intuitive app control for personalized lighting moods.
- • **Ultra-Bright LED Density:** 72 LEDs per meter deliver 50% more brilliance than previous models, transforming your room into a vibrant immersive theater.
- • **Full-Corner Color Mapping:** Every edge of your 65-70 inch TV is perfectly color-matched, creating a wraparound glow that pulls you deeper into the action.
- • **Seamless Multi-Device Hub:** Four HDMI 2.1 ports let you effortlessly connect your Xbox, Firestick, PC, and more—no more cable juggling or input delays.

## Overview

The Lytmi Fantasy 3 TV Backlight Kit is a cutting-edge HDMI 2.1 sync box with ultra-dense 72 LEDs per meter, designed for 65-70 inch TVs. It supports 8K 60Hz and 4K 120Hz resolutions, delivering instant, accurate color synchronization directly from your HDMI signal. With four HDMI inputs, app and voice control compatibility, and music-responsive RGB lighting, it transforms your viewing experience into an immersive, smart home centerpiece.

## Description

desertcart.com: Lytmi Fantasy 3 TV Backlight Kit HDMI 2.1 with Sync Box Wi-Fi for 65-70 inch 8K 60Hz Color Lights Compatible Alexa and Google Assistant, App Control, Music RGB (Red, Green, Blue) LDD21

Review: Ultimate Immersive Experience - I finally upgraded my TV lights and decided to try this Lytmi Fantasy 3 because it works directly through HDMI instead of my old govee camera based system. Amazing! This is the bright, accurate color and instant response TV bias lighting I’ve been waiting for all this time. I love a good immersive experience and had to put up with the shortcomings of the system I had before. It worked with a camera you mount to your TV and was incredibly distracting. With the Fantasy 3, it just works! Pretty cool that it has 4 HDMI inputs, so I can use it with my FIrestick 4k Max, Xbox, my PC, and room for one more. This totally blows away my old system that had an annoying delay because it had to pick up the image through the camera and process it. That would always take me out of the experience. This new Lytmi unit is literally instant, the background lighting is seamless with anything being played and can handle the fastest scenes and on-screen action. It legit looks like a pixel-perfect extension of the screen. We watched a few movies to test it out and actually jumped when lightning flashed or an unexpected explosion because it was in perfect sync with the video and audio and lit up the whole room. Another bonus of this upgrade is the color accuracy. With my old system, the camera had trouble picking the right colors depending on the scene and especially depending on the ambient lighting in the room. It didn’t work well in the day even when we closed the blinds. With this unit, it’s all done digitally directly from the HDMI video signal, so it works perfectly day or night. And the colors are always spot-on and match the video way better than I thought possible. Setup was easy and the Lytmi app is simple and easy to use. You can also do music-responsive lighting or ambient lighting effects and because it’s so bright, it really creates a great atmosphere in the entire room. I tried it with all my video apps, Xbox, and PC and it worked perfectly. If you’re a hardcore gamer and absolutely need variable refresh rate and automatic low latency, I just saw that they have a version for a few bucks more if you need those specific premium gaming features. Otherwise, it works great with our Xbox and we had fun playing with a more immersive experience. Overall a great system and a huge upgrade from my old lights. The Fantasy 3 has 3x times the number of LEDs, so it’s super bright (and adjustable if needed for late-night movies). It’s got 4x HDMI 2.1 inputs, so it can handle any UHD video. It’s even got a feature that really seemed like any system should have had, it automatically turns On and Off with your TV! I know that sounds simple, but it’s a great feature that makes it effortless and part of the whole system. Great system. Highly recommend you experience it yourself.
Review: A great device that adds immersion - EDIT: Updated review after 3 weeks - Updated review EDIT: The LED strips are incapable of matching a wide array of different colors/shades within the "white/kelvin" spectrum, making the lights more distracting than immersive during all well lit scenes. I frequently shut it off now due to this issue as It now stays off more than on. I have returned it for this reason. Maybe their next version will have a higher quality LEDs? Also, the sync box not having a physical remote means that every time you want to change input sources you have to open the Lytmi app on your phone. There's no way to control or change video input selection via voice/assistant controls. The only other option for changing sources is to press the physical button on the sync box, which is far from convenient. Lastly, the USB C extension cable failed. The lights would strobe and the only way to stop it was to plug the cable directly into the sync box, with the extension cable. So if you do decide to purchase this, ensure you take the time to measure. Original review: It took my son and I about 45 minutes to set this up. My TV is wall mounted so we had to remove it from the wall, install LED light strip and rerun all of the HDMI cables. Getting the Lytmi app setup on my phone was straightforward but connecting to the device was a little finicky at first. The lights perform really well. They make watching movies and playing games much more immersive than they already were. My only piece of advice is that if you have a larger television that is wall mounted, you may need to purchase a USB C female to USB C male extension cable, as the USB C cable that is attached to the LED light strip you install on the back of the television was not long enough to make it to the Lytmi connection box. For reference, I have a 77" LG and the conduit for the cables are located in the center middle of the screen. The cable that comes pre-installed on the LED light strip was almost 5 ft shy of being able to be properly run through the conduit.

## Features

- An Evolution for Gaming : Comes with the first-ever sync box that supports 8K resolution. Enjoy ultra-immersive viewing when playing high-performance games at 8K 60Hz or 4K 120Hz
- Brilliant and Bright : The next generation TV backlight strip features 72 LEDs per meter which is 50% more LEDs compared to the previous design for brighter and brilliant lighting effects
- Sync the Accurate and Smart way : The lighting algorithm picks out the best colors and combines them to accurately sync with your screen, even when watching fast-paced movies
- Full Corners Mapping Capacity : All corners of your TV are color matched so that you can enjoy a perfectly synchronized visual experience
- One Box, Many Possibilities: All ports support HDMI 2.1 for multiple media device connections. Pair the Lytmi light for full interactive lighting. Note: LG C9, LG C2, and LG E6 TVs don't support Dolby Vision with Neo 3 sync box

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0C9SW7WR4 |
| Batteries | 1 Lithium Polymer batteries required. |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #557,052 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #2,376 in LED Strip Lights |
| Brand | Lytmi |
| Bulb Base | B15D |
| Bulb Shape Size | B10 |
| Color | RGB (Red, Green, Blue) |
| Control Method | App |
| Controller Type | App Control, Voice Control |
| Customer Reviews | 3.4 3.4 out of 5 stars (268) |
| Date First Available | July 19, 2023 |
| Finish | Polished |
| Form Factor | Flexible LED Strip |
| Included Components | Hub |
| Indoor/Outdoor Usage | Indoor |
| Item Length | 265 Inches |
| Item Package Quantity | 1 |
| Item Weight | 2.07 pounds |
| Item model number | LDD21 |
| Light Color | Multicolor |
| Light Source Type | LED |
| Manufacturer | Lytmi |
| Material | Polyvinyl Chloride |
| Number of Batteries | 1 Lithium Polymer batteries required. |
| Number of Items | 1 |
| Number of Light Sources | 72 |
| Occasion | indoor ambiance |
| Part Number | LDD21-65US |
| Power Source | DC |
| Shape | Rectangular |
| Size | For 65-70 Inch TV(Uncroppable) |
| Special Feature | Sync Screen/Music |
| Special Features | Sync Screen/Music |
| Style | Modern |
| Theme | Tv |
| UPC | 714955976432 |
| Usage | Decoration |
| Voltage | 12 Volts (DC) |
| Warranty Description | No. |
| Wattage | 36 watts |

## Product Details

- **Brand:** Lytmi
- **Color:** RGB (Red, Green, Blue)
- **Indoor/Outdoor Usage:** Indoor
- **Light Color:** Multicolor
- **Light Source Type:** LED
- **Occasion:** indoor ambiance
- **Power Source:** DC
- **Special Feature:** Sync Screen/Music
- **Style:** Modern
- **Theme:** Tv

## Images

![Lytmi Fantasy 3 TV Backlight Kit HDMI 2.1 with Sync Box Wi-Fi for 65-70 inch 8K 60Hz Color Lights Compatible Alexa and Google Assistant, App Control, Music RGB (Red, Green, Blue) LDD21 - Image 1](https://m.media-amazon.com/images/I/71WqwJD6mbL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: I have an 8K 40 inch TV, does it support 8K? And can l cut the strip lights to any length l want?**
A: Lytmi Fantasy 3 Sync Box supports HDMI 2.1 up to 8K 60Hz and 4K 120Hz, Dolby Vision and HDR 10. But the Light strip cannot be cut to fit other smaller TVs.

**Q: What's required for Lytmi Home App to fully function?**
A: 1.Please allow access requests to your phone's Bluetooth, GPS and WiFi for the app. 2.Ensure that you are using the 2.4 GHz network Wi-Fi(Currently 5G is not supported, we are working on it. Most routers nowadays have both 2.4G and 5G WiFi bands.

**Q: Will the Lytmi Fantasy 3 Sync Box still work when I use the smart TV's built-in software to watch videos?**
A: Sync Box must be connected with a input signal to work normally.Please note that eARC is not supported.Directly connecting to the sync box may cause audio problems.Customers are advised to connect in a specific way:HDMI Input devices→Neo3 box→eARC→TV

**Q: Does the neo 3 sync box support VRR, ALLM and CEC?**
A: Currently Neo 3 sync box does not support VRR, ALLM and CEC functions, we are working on it, and the next version will be upgraded. (There may be some compatibility issues in the game mode of Samsung TV, please be careful Buy)

**Q: Why does my TV backlight strips fail to switch off with my TV?**
A: The light strips turning off at the same time as the TV funtion is determined by whether your TV turns off the power to the HDMl port. If the HDMl port remains powered after turning off the TV,the light strips will also remain on.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Ultimate Immersive Experience
*by S***. on September 26, 2023*

I finally upgraded my TV lights and decided to try this Lytmi Fantasy 3 because it works directly through HDMI instead of my old govee camera based system. Amazing! This is the bright, accurate color and instant response TV bias lighting I’ve been waiting for all this time. I love a good immersive experience and had to put up with the shortcomings of the system I had before. It worked with a camera you mount to your TV and was incredibly distracting. With the Fantasy 3, it just works! Pretty cool that it has 4 HDMI inputs, so I can use it with my FIrestick 4k Max, Xbox, my PC, and room for one more. This totally blows away my old system that had an annoying delay because it had to pick up the image through the camera and process it. That would always take me out of the experience. This new Lytmi unit is literally instant, the background lighting is seamless with anything being played and can handle the fastest scenes and on-screen action. It legit looks like a pixel-perfect extension of the screen. We watched a few movies to test it out and actually jumped when lightning flashed or an unexpected explosion because it was in perfect sync with the video and audio and lit up the whole room. Another bonus of this upgrade is the color accuracy. With my old system, the camera had trouble picking the right colors depending on the scene and especially depending on the ambient lighting in the room. It didn’t work well in the day even when we closed the blinds. With this unit, it’s all done digitally directly from the HDMI video signal, so it works perfectly day or night. And the colors are always spot-on and match the video way better than I thought possible. Setup was easy and the Lytmi app is simple and easy to use. You can also do music-responsive lighting or ambient lighting effects and because it’s so bright, it really creates a great atmosphere in the entire room. I tried it with all my video apps, Xbox, and PC and it worked perfectly. If you’re a hardcore gamer and absolutely need variable refresh rate and automatic low latency, I just saw that they have a version for a few bucks more if you need those specific premium gaming features. Otherwise, it works great with our Xbox and we had fun playing with a more immersive experience. Overall a great system and a huge upgrade from my old lights. The Fantasy 3 has 3x times the number of LEDs, so it’s super bright (and adjustable if needed for late-night movies). It’s got 4x HDMI 2.1 inputs, so it can handle any UHD video. It’s even got a feature that really seemed like any system should have had, it automatically turns On and Off with your TV! I know that sounds simple, but it’s a great feature that makes it effortless and part of the whole system. Great system. Highly recommend you experience it yourself.

### ⭐ A great device that adds immersion - EDIT: Updated review after 3 weeks
*by T***L on September 15, 2023*

Updated review EDIT: The LED strips are incapable of matching a wide array of different colors/shades within the "white/kelvin" spectrum, making the lights more distracting than immersive during all well lit scenes. I frequently shut it off now due to this issue as It now stays off more than on. I have returned it for this reason. Maybe their next version will have a higher quality LEDs? Also, the sync box not having a physical remote means that every time you want to change input sources you have to open the Lytmi app on your phone. There's no way to control or change video input selection via voice/assistant controls. The only other option for changing sources is to press the physical button on the sync box, which is far from convenient. Lastly, the USB C extension cable failed. The lights would strobe and the only way to stop it was to plug the cable directly into the sync box, with the extension cable. So if you do decide to purchase this, ensure you take the time to measure. Original review: It took my son and I about 45 minutes to set this up. My TV is wall mounted so we had to remove it from the wall, install LED light strip and rerun all of the HDMI cables. Getting the Lytmi app setup on my phone was straightforward but connecting to the device was a little finicky at first. The lights perform really well. They make watching movies and playing games much more immersive than they already were. My only piece of advice is that if you have a larger television that is wall mounted, you may need to purchase a USB C female to USB C male extension cable, as the USB C cable that is attached to the LED light strip you install on the back of the television was not long enough to make it to the Lytmi connection box. For reference, I have a 77" LG and the conduit for the cables are located in the center middle of the screen. The cable that comes pre-installed on the LED light strip was almost 5 ft shy of being able to be properly run through the conduit.

### ⭐⭐⭐⭐⭐ Turns any TV into the center of the experience
*by J***K on September 22, 2025*

Transforming my living room’s atmosphere with the Lytmi Fantasy 3 Kit has been one of those small but significant tech joys. From the very first moment, the experience feels much more immersive: the LED lights follow the rhythm and colors of every scene on my TV, making a simple movie night or a gaming session truly come alive around me. My Xbox Series X looks spectacular with these lights. Positive points: Installation was straightforward All the configuration can be managed from your phone The system perfectly recognizes each HDMI input, so I never have to worry about losing picture quality The fact that it works with voice assistants makes the whole experience even more convenient The Lytmi Fantasy 3 Kit turns any TV into the center of the experience, and honestly, I can’t imagine going back to watching TV the old way anymore.

## Frequently Bought Together

- Lytmi Fantasy 3 TV Backlight Kit HDMI 2.1 with Sync Box Wi-Fi for 65-70 inch 8K 60Hz Color Lights Compatible Alexa and Google Assistant, App Control, Music RGB (Red, Green, Blue) LDD21
- Amazon Fire TV Stick 4K Max streaming device (newest model) supports Wi-Fi 6E, free & live TV without cable or satellite

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.ro/products/542566026-lytmi-fantasy-3-tv-backlight-kit-hdmi-2-1-sync](https://www.desertcart.ro/products/542566026-lytmi-fantasy-3-tv-backlight-kit-hdmi-2-1-sync)

---

*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-02-05*