---
product_id: 663337371
title: "HDMI 2.1 Sync Box 2, AI Sync Box with TV Backlight, Supports 8K@60Hz, 4K@144Hz, VRR and ALLM, Works with SmartThings, Matter and Alexa, RGBIC LED Light Strip for 55-65 inch TVs, 75 LEDs/m"
brand: "govee"
price: "¥80837"
currency: JPY
in_stock: true
reviews_count: 9
category: "Govee"
url: https://www.desertcart.jp/products/663337371-hdmi-2-1-sync-box-2-ai-sync-box-tv
store_origin: JP
region: Japan
---

# 75 LEDs/m RGBIC vivid lighting VRR & ALLM for lag-free gaming 8K@60Hz & 4K@144Hz HDMI 2.1 HDMI 2.1 Sync Box 2, AI Sync Box with TV Backlight, Supports 8K@60Hz, 4K@144Hz, VRR and ALLM, Works with SmartThings, Matter and Alexa, RGBIC LED Light Strip for 55-65 inch TVs, 75 LEDs/m

**Brand:** govee
**Price:** ¥80837
**Availability:** ✅ In Stock

## Summary

> ✨ Elevate your screen, light up your life! ✨

## Quick Answers

- **What is this?** HDMI 2.1 Sync Box 2, AI Sync Box with TV Backlight, Supports 8K@60Hz, 4K@144Hz, VRR and ALLM, Works with SmartThings, Matter and Alexa, RGBIC LED Light Strip for 55-65 inch TVs, 75 LEDs/m by govee
- **How much does it cost?** ¥80837 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.jp](https://www.desertcart.jp/products/663337371-hdmi-2-1-sync-box-2-ai-sync-box-tv)

## Best For

- govee enthusiasts

## Why This Product

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

## Key Features

- • **Game-Changing Sync Tech:** AI-powered CogniGlow automatically matches your screen content with dynamic lighting, reducing latency and screen tearing for immersive gameplay.
- • **Vibrant RGBIC LED Strip:** High-density 75 LEDs/m strip delivers richer colors and purer whites, transforming your 55-65 inch TV setup into a visual masterpiece.
- • **Next-Gen Visual Brilliance:** Experience ultra-smooth 8K@60Hz and 4K@144Hz with the latest HDMI 2.1 interface for stunning clarity and speed.
- • **Expand Your Lighting Universe:** Connect up to 10 Govee lights with DreamView to synchronize your entire room’s lighting, creating a cinematic atmosphere you won’t want to miss.
- • **Seamless Smart Home Integration:** Works effortlessly with SmartThings, Matter, and Alexa for voice-controlled ambiance that fits your lifestyle.

## Overview

The Govee HDMI 2.1 Sync Box 2 is a cutting-edge AI-powered TV backlight system supporting 8K@60Hz and 4K@144Hz with VRR and ALLM for smooth visuals. Featuring a high-density RGBIC LED strip with 75 LEDs per meter, it delivers vibrant, accurate colors for 55-65 inch TVs. Compatible with SmartThings, Matter, and Alexa, it offers seamless voice control and can sync up to 10 Govee lights for an immersive, room-wide lighting experience tailored for gamers, movie lovers, and smart home enthusiasts.

## Description

desertcart.com: Govee HDMI 2.1 Sync Box 2, AI Sync Box with TV Backlight, Supports 8K@60Hz, 4K@144Hz, VRR and ALLM, Works with SmartThings, Matter and Alexa, RGBIC LED Light Strip for 55-65 inch TVs, 75 LEDs/m : Tools & Home Improvement

Review: AI Sync Box is the absolute best Govee product. - I don't know why people mess around with the camera based TV backlight systems, when an HDMI pass-through system like this works SO much better. It's plug and play easy to install, works perfectly with no calibration needed, and it hides out of sight instead of adding an ugly obstruction top dead center of your screen. The backlights themselves are pretty good - although if you have an 85" TV this *barely* covers, you will have dark spots in the corners where the lights don't quite reach. They stick well though, I haven't had any problems with the lights falling off the TV at all. The main attraction though is the AI Sync Box, and the Govee phone app to control it. You can connect up to TEN other Govee lights to it, and map them to zones on the TV with the app so they are all controlled by the AI Sync Box when your TV is on - and now your *entire room* changes color with your TV! I have no interest in going to the theater anymore, my own living room looks more amazing now with all these lights. When adding other lights to your setup, just make sure the Govee product is "Movie Watching Dream View" compatible - some of their products only work with the "Scenic" or "Music" Dream View modes, and won't work with this product. I've found that most of their products are Movie Watching Dream View compatible though - even many of the outdoor lights! The regular Govee light bulbs work great with this. Another cool feature if you are a gamer, the "AI Identification" option in the mobile app can be enabled to add special lighting effects for specific games - make the lights go crazy when you get a pentakill in League of Legends, or make the lights flash colors when you get hit by an item in Mario Kart for example. This only supports a preset list of ~50 games right now, but it has many of the most popular titles in there, and they seem to be expanding support for new games. The HDMI pass-through, the high quality mobile app, and the easy integration with other Govee products makes this the obvious best choice for upgrading your home theater. Govee support is also fantastic, and the mobile app has a built-in social platform which at first I found annoying but has actually been a great source for tips and advice on Govee products from other users.
Review: Excellent immersion upgrade with full HDMI 2.1 support - This sync box works extremely well and adds a noticeable level of immersion without sacrificing video quality. Setup was straightforward, and it passed through 4K at high refresh rates with no issues. The backlight response is fast, accurate, and noticeably better than camera-based solutions since it pulls color data directly from the HDMI signal. It works great for gaming, movies, and general TV use, and the lighting effects feel smooth rather than distracting. The Govee app is easy to use and offers plenty of customization options to fine-tune brightness, color accuracy, and effects. If you want dynamic backlighting and still need full HDMI 2.1 features, this is a solid upgrade and absolutely worth it.

## Features

- Latest HDMI 2.1 Interface: Govee AI Sync Box 2 adopts the latest HDMI 2.1 interface for data transmission, enabling screen and lighting synchronization, and supporting resolutions of up to 8K at 60Hz and 4K at 144Hz. Note: Automatic signal switching is not supported when multiple devices are connected.
- Unique CogniGlow Technology: Govee Sync Box uses AI to automatically recognize images and text, determining trigger conditions to match specific lighting effects. HDMI 2.1 Sync Box supports VRR and ALLM, reducing screen tearing and latency, providing a seamless experience.
- RGBWIC Four-Color Mixing: An RGBWIC LED light strip ensures purer white light and accurate color blending for vibrant effects, making it better suited for game visuals.
- High-Density Light Strip: With 75 LEDs/m and a brightness of 450 lumens/m, the high-density light strip cooperates with our Sync Box to provide a brighter and more comfortable experience.
- Matter Support: Seamlessly integrates with multiple smart ecosystems, supporting convenient voice control.(Only lighting-related functions are supported).
- DreamView: Synchronize colors across multiple Govee lights to create an immersive gaming environment. Equally supports Dolby vision and Doldy atmos.
- A special note for using HDR, HDR10+, and Dolby Vision: Due to the functional characteristics, when you turn on HDR, HDR1O+, or Dolby Vision, the saturation of the light's color might decrease, which is normal. You can also adjust the saturation in the app to achieve a satisfying lighting effect.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B0DDPSCLFR |
| Batteries Included? | No |
| Batteries Required? | No |
| Best Sellers Rank | #9,974 in Tools & Home Improvement ( See Top 100 in Tools & Home Improvement ) #113 in LED Strip Lights |
| Brand | Govee |
| Color | Black |
| Control Method | App, Voice |
| Controller Type | Amazon Alexa, App Control |
| Customer Reviews | 4.2 4.2 out of 5 stars (451) |
| Date First Available | September 10, 2024 |
| Form Factor | TV Box |
| Included Components | HDMI 2.1 Cable * 2, HDMI 2.1 Sync Box *1, Strip Lights *1, Power Adapter *1 |
| Indoor/Outdoor Usage | Indoor |
| Ingress Protection Code Rating | IPX0 |
| Item Length | 11.8 Feet |
| Item Weight | 4.25 pounds |
| Item model number | H6604B |
| Light Color | Multicolor |
| Light Source Type | LED |
| Manufacturer | Govee |
| Material | Polycarbonate |
| Number of Items | 1 |
| Number of Light Sources | 60 |
| Occasion | Christmas |
| Part Number | H6604112 |
| Power Source | Corded Electric |
| Smart Home Compatibility | Smart Home Compatible |
| Special Feature | Adjustable |
| Special Features | Adjustable |
| Style | Modern |
| Theme | Christmas |
| UPC | 810088349843 |

## Product Details

- **Brand:** Govee
- **Color:** Black
- **Indoor/Outdoor Usage:** Indoor
- **Light Color:** Multicolor
- **Light Source Type:** LED
- **Occasion:** Christmas
- **Power Source:** Corded Electric
- **Special Feature:** Adjustable
- **Style:** Modern
- **Theme:** Christmas

## Images

![HDMI 2.1 Sync Box 2, AI Sync Box with TV Backlight, Supports 8K@60Hz, 4K@144Hz, VRR and ALLM, Works with SmartThings, Matter and Alexa, RGBIC LED Light Strip for 55-65 inch TVs, 75 LEDs/m - Image 1](https://m.media-amazon.com/images/I/71xK5hrEODL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ AI Sync Box is the absolute best Govee product.
*by C***B on December 29, 2025*

I don't know why people mess around with the camera based TV backlight systems, when an HDMI pass-through system like this works SO much better. It's plug and play easy to install, works perfectly with no calibration needed, and it hides out of sight instead of adding an ugly obstruction top dead center of your screen. The backlights themselves are pretty good - although if you have an 85" TV this *barely* covers, you will have dark spots in the corners where the lights don't quite reach. They stick well though, I haven't had any problems with the lights falling off the TV at all. The main attraction though is the AI Sync Box, and the Govee phone app to control it. You can connect up to TEN other Govee lights to it, and map them to zones on the TV with the app so they are all controlled by the AI Sync Box when your TV is on - and now your *entire room* changes color with your TV! I have no interest in going to the theater anymore, my own living room looks more amazing now with all these lights. When adding other lights to your setup, just make sure the Govee product is "Movie Watching Dream View" compatible - some of their products only work with the "Scenic" or "Music" Dream View modes, and won't work with this product. I've found that most of their products are Movie Watching Dream View compatible though - even many of the outdoor lights! The regular Govee light bulbs work great with this. Another cool feature if you are a gamer, the "AI Identification" option in the mobile app can be enabled to add special lighting effects for specific games - make the lights go crazy when you get a pentakill in League of Legends, or make the lights flash colors when you get hit by an item in Mario Kart for example. This only supports a preset list of ~50 games right now, but it has many of the most popular titles in there, and they seem to be expanding support for new games. The HDMI pass-through, the high quality mobile app, and the easy integration with other Govee products makes this the obvious best choice for upgrading your home theater. Govee support is also fantastic, and the mobile app has a built-in social platform which at first I found annoying but has actually been a great source for tips and advice on Govee products from other users.

### ⭐⭐⭐⭐⭐ Excellent immersion upgrade with full HDMI 2.1 support
*by T***R on January 15, 2026*

This sync box works extremely well and adds a noticeable level of immersion without sacrificing video quality. Setup was straightforward, and it passed through 4K at high refresh rates with no issues. The backlight response is fast, accurate, and noticeably better than camera-based solutions since it pulls color data directly from the HDMI signal. It works great for gaming, movies, and general TV use, and the lighting effects feel smooth rather than distracting. The Govee app is easy to use and offers plenty of customization options to fine-tune brightness, color accuracy, and effects. If you want dynamic backlighting and still need full HDMI 2.1 features, this is a solid upgrade and absolutely worth it.

### ⭐⭐⭐⭐ Amazing Product But Not Perfect
*by A***R on October 31, 2025*

This is a huge upgrade over the T2 camera model I used before. The lights are so much brighter, and of course, the 'no camera' feature means no more fighting reflections and always needing to calibrate it. Installation was simple. I ended up using some other edge clamps because the included ones just didn't work and kept falling off. The lights are super sticky. I even removed them from my one TV and installed them on a newer TV a week after installation. It all looks pretty cool and makes such a big difference. I paired them with my bar lights and floor lamp using Dreamview to add some extra flair. The combination makes the room quite bright, so I don't even need to use a lamp. The box itself is great too. All formats work as I hoped. Even PC gaming manages 120Hz 4K with 12-bit colour depth. No flashing or loss in quality. The light strip on the box is also a nice addition. If I have to complain about one thing, I wish there was a simple IR remote to switch HDMI formats. Having to open the app, wait for it to load, then wait for it to connect to the unit, then tap on HDMI formats to switch to a different source is a real pain. Takes way too long. Especially if you have an Apple TV/MediaBox connected to the unit with a game console and PC and you're forever swapping around between them.

## Frequently Bought Together

- Govee HDMI 2.1 Sync Box 2, AI Sync Box with TV Backlight, Supports 8K@60Hz, 4K@144Hz, VRR and ALLM, Works with Matter and Alexa, RGBIC LED Light Strip for 55-65 inch TVs, 75 LEDs/m
- Govee RGBIC Floor Lamp, LED Corner Lamp Works with Alexa, 1000 Lumen Smart Modern Floor Lamp with Music Sync and 16 Million DIY Colors, Color Changing Standing Lamp for Bedroom Living Room Black
- Govee Smart Light Bulbs, Color Changing Light Bulb, Work with Alexa and Google Assistant, 16 Million Colors RGBWW, WiFi & Bluetooth LED Light Bulbs, Music Sync, A19, 800 Lumens, 4 Pack

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*Product available on Desertcart Japan*
*Store origin: JP*
*Last updated: 2026-02-26*