UNITEK B1111A01 2-in-1 Bluetooth 5.3 Transmitter Receiver for TV Car Stereo Headphones 10H Battery Low Latency
Transform Any Wired Audio Device into Wireless – Two Modes, One Adapter
The UNITEK B1111A01 2-in-1 Bluetooth 5.3 Transmitter Receiver is the ultimate audio companion for travel, home entertainment, and car audio. Whether you want to stream audio from your TV to wireless headphones, add Bluetooth to an old car stereo, or use your own earbuds on an airplane, this compact adapter does it all.
Two Modes for Any Situation
TX (Transmitter) Mode – Send audio from wired audio sources to Bluetooth headphones or speakers.
Connect to TV, PC, desktop computer, or in-flight entertainment system (3.5mm jack)
Stream audio to any Bluetooth headphones, earbuds, or soundbar
Watch late-night TV without disturbing others, or use your own noise‑cancelling earbuds on a plane
RX (Receiver) Mode – Receive audio from Bluetooth devices to wired speakers or car stereos.
Connect to car auxiliary input, home stereo, powered speakers, or amplifier (3.5mm jack)
Pair with your phone, tablet, or computer to stream music, podcasts, or hands-free calls
Upgrade your old car audio system without replacing the whole unit
Advanced Bluetooth 5.3 – Low Latency, Stable Connection
The built-in Bluetooth 5.3 chip provides:
Low latency of approximately 40ms – minimal audio delay, ideal for watching video or gaming
Anti-interference technology for stable transmission
Transmission range up to 10 meters (30 feet) in open space (may vary through walls)
10-Hour Battery – Charge and Use Simultaneously
Enjoy up to 10 hours of continuous use on a full charge. Even when the battery runs low, you can plug in the USB-C cable and continue using the device without interruption – perfect for long flights or all‑day listening.
Easy Setup – No Drivers Needed
3.5mm audio connector for instant connection to any audio source
USB-C port for charging
Simple switch to toggle between TX and RX mode
Power on/off button
Works immediately – no software or drivers required
What's in the Box
UNITEK 2-in-1 Bluetooth Transmitter Receiver
USB-C charging cable (length not specified)
3.5mm audio cable (likely included, but confirm)
User manual.
Technical Specifications
Frequently Asked Questions
1. Can I use this to add Bluetooth to my car for music streaming? +
Yes. In RX (Receiver) mode, connect the adapter to your car's auxiliary (AUX) input via a 3.5mm cable. Pair with your phone, and you can stream music or take calls through your car speakers.
2. Will this work with airplane entertainment systems? +
Yes. In TX (Transmitter) mode, plug the adapter into the headphone jack of the seatback screen. Pair your Bluetooth earbuds or headphones, and listen to movies or music wirelessly. Check airline policies before use.
3. Does it support simultaneous charging and use? +
Yes, you can charge the device via USB-C while using it in either TX or RX mode. This is useful for long trips.
4. What is the latency? Will audio be in sync with video? +
The low-latency encoder achieves approximately 40ms delay, which is generally imperceptible for most video viewing. For critical gaming or professional use, a dedicated low-latency solution may be better.