I. Product Overview
Say goodbye to the hassle of wires—turn all your audio devices wireless in an instant!
This Bluetooth 5.4 audio transceiver features a 2-in-1 receiver/transmitter design, supporting dual reception and dual transmission—meeting all your wireless audio needs with a single device. Whether you want to connect your phone to your car stereo while driving, turn your old speakers into Bluetooth speakers at home, or use Bluetooth headphones to connect to the in-flight entertainment system during a long-haul flight, it handles it all with ease.
Equipped with a smart Bluetooth 5.4 chip, it offers stable signal, low latency, and a transmission range of up to 10 meters. Its “one cable, three uses” design—the Type-C port simultaneously supports charging, AUX audio input/output, and PC audio data reading—truly delivers multi-functionality in a single device.
II. Key Selling Points
🔹 Dual modes (Receive [RX] and Transmit [TX]) with one-button switching
Receive Mode (RX): Wirelessly transmits audio from Bluetooth devices such as smartphones and tablets to non-Bluetooth devices like traditional speakers, car stereos, and wired headphones. Plug it into your car’s AUX jack, and even an older car instantly becomes a Bluetooth-enabled audio system.
Transmit Mode (TX): Transmits audio from non-Bluetooth devices such as TVs, computers, and in-flight entertainment systems to Bluetooth headphones or Bluetooth speakers. Even older TVs can now play audio wirelessly.
🔹 Dual Receive + Dual Transmit, One-to-Two Sharing
Supports simultaneous connection to two Bluetooth devices—in Transmit Mode, connect two Bluetooth headphones at once to share audio and video with family and friends; in Receive Mode, connect two smartphones simultaneously for seamless switching.
🔹 Bluetooth 5.4 Chip, Stable and Low Latency
Utilizes next-generation Bluetooth 5.4 technology, delivering up to 72% improved connection stability, 66% reduced latency, and 48% lower power consumption. Enjoy movies and games with smooth, lag-free audio-video synchronization.
🔹 Long Battery Life, Type-C Fast Charging
Features a built-in 200mAh battery, providing approximately 10 hours of battery life in receiver mode and 6 hours in transmitter mode. The Type-C port ensures convenient and fast charging.
🔹 Private Call Mode
Press and hold the multifunction button for 3 seconds to instantly switch to phone call mode, protecting your call privacy.
🔹 Lightweight and Portable
Measuring just 104mm × 38.5mm × 14.8mm—smaller than a lipstick—it’s easy to carry with you on business trips or vacations.
III. Use Cases
Scenario: Mode Purpose
🚗 In-Car: RX Receive Mode Connect your phone to the car’s AUX port to instantly turn an older car into a Bluetooth audio system, allowing you to enjoy navigation, music, and hands-free calls throughout your trip
📺 TV/PC TX Transmit Mode: Connect Bluetooth headphones or speakers to your TV or computer to watch movies late at night without disturbing your family
✈️ Air Travel: TX Transmission Mode Connect to the in-flight entertainment system and enjoy onboard audio and video wirelessly with Bluetooth headphones
🏠 Home Audio: RX Reception Mode Upgrade older speakers or amplifiers to Bluetooth and stream music wirelessly from your phone
🎮 Gaming: TX Transmission Mode Connect your gaming console to Bluetooth headphones for low-latency, seamless gameplay
💼 Office Meetings: RX Receiver Mode Turn wired headphones or speakers into Bluetooth devices for more freedom during wireless meetings
IV. Product Specifications
Item: Specifications
Bluetooth Version: Bluetooth 5.4
Operating Mode: Receiver (RX) / Transmitter (TX) 2-in-1
Connectivity: Dual Receiver + Dual Transmitter (connects to 2 devices simultaneously)
Transmission Range: 10 meters (line of sight)
Battery Capacity: 200mAh
Battery Life: Approx. 10 hours in Receive Mode / Approx. 6 hours in Transmit Mode
Charging Port: Type-C 5V
Audio Port: 3.5mm AUX (3-in-1 cable: charging/AUX/PC audio data)
Dimensions: 104 × 38.5 × 14.8mm
Certifications: FCC, CE, RoHS, BQB, etc.
V. User Manual
Powering On and Mode Switching
Press and hold the multifunction button for 3 seconds to power on
Use the RX/TX toggle switch to switch between receive and transmit modes with a single press
Receive Mode (RX) Usage
Connect the product to a speaker, car audio system, or other device via the AUX cable
Turn on your phone’s Bluetooth, search for “BT-108,” and tap to connect
After the first phone connects successfully, the indicator light on Earpiece 1 will remain steady; after the second phone connects successfully, the indicator light on Earpiece 2 will remain steady
Using Transmit Mode (TX)
Connect the device to a TV, computer, or other device via the AUX cable
Turn on your Bluetooth headset or speaker to enter pairing mode; the device will connect automatically
After a successful connection, the indicator light on Earpiece 1 will remain steady
Double-tap the multifunction button to search for a second device; after a successful connection, the icon for the second earpiece will remain steady
Private Call Mode
Press and hold the multifunction button for 3 seconds to switch to phone call mode
VI. Package Contents
Bluetooth Audio Transceiver × 1
3-in-1 Cable (Type-C Charging/AUX Audio/PC Data) × 1
User Manual × 1
Note: This product does not come with an airplane adapter by default. If you need to use it on an airplane, please purchase one separately.
