
Bluetooth Transmitter receiver
One device, three functions: 1: Transmit 2 :Receive 3: Voice Assistant (Hands-free Calling).
This device enables wireless use of non-Bluetooth devices as if they were Bluetooth-enabled.
Compatible devices: Cars, TVs, smartphones, iPhones, Android devices, tablets, Nintendo Switch, game consoles, audio adapters, PCs, laptops, earphones, headsets, speakers, CD players, MP3 players, car audio systems, etc.
Long Battery Life: Charge while using the Bluetooth transmitter/receiver. The built-in battery provides 4 hours of use in transmit mode and 6 hours in receive mode. Enjoy your favorite content wirelessly anytime.
Industry-Leading Bluetooth: Equipped with Bluetooth 5.4 and CSR chips, it offers lower power consumption and twice the data transfer speed compared to Bluetooth 4.0. This provides high-quality audio, faster pairing, and compatibility with multiple devices.
Translated with DeepL.com (free version)

Important Notes:
Compatible with most AirPods models. Does not support AirPods Pro 2nd generation, AirPods 4th generation, or AirPods 4th generation with Active Noise Cancellation (ANC).
Not recommended for use with musical instruments.
Uses SBC decoding, resulting in a latency of 170-220ms. Transmission delays make it unsuitable for live instrument performance.

Ready to Pair
5. Open the device you wish to connect. The C28 will automatically connect. When the connection is successful, the wireless indicator
will light up red.
TX Transmission Mode Sequence
1. Charge using the Micro USB cable before use.
Note: Charge the host device before use. Failure to do so may cause issues such as delayed operation or inability to use.
2. Connect the C28 to your audio device using the AUX cable.
3. Switch the button to the TX position.
4. Open the device (press and hold the multifunction button). The red light will flash rapidly, indicating it is ready.

RX Receive Mode Sequence
1. Charge using the Micro USB cable before use.
Note: Charge the host before use. Failure to do so may cause issues such as delayed operation or unavailability.
2. Connect C 28 to your audio device using the AUX cable.
3. Switch the button to the RX position.
4. Turn on the device (press and hold the multifunction button). The blue light will flash rapidly, indicating it is ready.
Ready to Pair
5. Find the C 28 in wireless search and select Pairing.

Built-in HD Microphone
When connecting your mobile device to the car stereo, you can experience the following:
Music Playback: While connected via Bluetooth, play music from your mobile device on a non-Bluetooth car stereo.
Hands-Free Calling: When a call comes in while driving, press the Call/Play button to answer. Press it again to end the call.
Voice Assistant: To use the voice assistant while connected via Bluetooth, press and hold the call/play button for about 3 seconds to activate it. Since the Bluetooth transmitter/receiver has a built-in microphone, you can change songs, make calls, or send messages just by speaking to your device. You can operate it by voice without taking your device out of your pocket, preventing distractions while driving. Compatible Devices: iPhone, Android devices, etc. (Functionality may be limited depending on the device model).



Bluetooth Transmitter receiver
One device, three functions: 1: Transmit 2 :Receive 3: Voice Assistant (Hands-free Calling).
This device enables wireless use of non-Bluetooth devices as if they were Bluetooth-enabled.
Compatible devices: Cars, TVs, smartphones, iPhones, Android devices, tablets, Nintendo Switch, game consoles, audio adapters, PCs, laptops, earphones, headsets, speakers, CD players, MP3 players, car audio systems, etc.
Long Battery Life: Charge while using the Bluetooth transmitter/receiver. The built-in battery provides 4 hours of use in transmit mode and 6 hours in receive mode. Enjoy your favorite content wirelessly anytime.
Industry-Leading Bluetooth: Equipped with Bluetooth 5.4 and CSR chips, it offers lower power consumption and twice the data transfer speed compared to Bluetooth 4.0. This provides high-quality audio, faster pairing, and compatibility with multiple devices.
Translated with DeepL.com (free version)

Important Notes:
Compatible with most AirPods models. Does not support AirPods Pro 2nd generation, AirPods 4th generation, or AirPods 4th generation with Active Noise Cancellation (ANC).
Not recommended for use with musical instruments.
Uses SBC decoding, resulting in a latency of 170-220ms. Transmission delays make it unsuitable for live instrument performance.

Ready to Pair
5. Open the device you wish to connect. The C28 will automatically connect. When the connection is successful, the wireless indicator
will light up red.
TX Transmission Mode Sequence
1. Charge using the Micro USB cable before use.
Note: Charge the host device before use. Failure to do so may cause issues such as delayed operation or inability to use.
2. Connect the C28 to your audio device using the AUX cable.
3. Switch the button to the TX position.
4. Open the device (press and hold the multifunction button). The red light will flash rapidly, indicating it is ready.

RX Receive Mode Sequence
1. Charge using the Micro USB cable before use.
Note: Charge the host before use. Failure to do so may cause issues such as delayed operation or unavailability.
2. Connect C 28 to your audio device using the AUX cable.
3. Switch the button to the RX position.
4. Turn on the device (press and hold the multifunction button). The blue light will flash rapidly, indicating it is ready.
Ready to Pair
5. Find the C 28 in wireless search and select Pairing.

Built-in HD Microphone
When connecting your mobile device to the car stereo, you can experience the following:
Music Playback: While connected via Bluetooth, play music from your mobile device on a non-Bluetooth car stereo.
Hands-Free Calling: When a call comes in while driving, press the Call/Play button to answer. Press it again to end the call.
Voice Assistant: To use the voice assistant while connected via Bluetooth, press and hold the call/play button for about 3 seconds to activate it. Since the Bluetooth transmitter/receiver has a built-in microphone, you can change songs, make calls, or send messages just by speaking to your device. You can operate it by voice without taking your device out of your pocket, preventing distractions while driving. Compatible Devices: iPhone, Android devices, etc. (Functionality may be limited depending on the device model).

















