1. Introduction
The JINSERTA JS-6726-BT16 is a versatile 2-in-1 Bluetooth 5.2 audio adapter designed to seamlessly integrate Bluetooth functionality into your non-Bluetooth devices or enable your non-Bluetooth audio devices to receive audio from Bluetooth sources. It supports both Transmitter (TX) and Receiver (RX) modes, offering hands-free calling capabilities in RX mode and HiFi stereo sound quality.

2. Package Contents
Please check the package for the following items:
- 1x BT16 Transmitter Adapter
- 1x Charging Cable (USB-A to USB-C)
- 1x User Manual
3. Product Overview
Familiarize yourself with the adapter's components and controls:

- Play/Pause Button: Used for power on/off and music playback control.
- Volume Up / Next Song Button (+): Short press for volume up, long press for next song.
- Volume Down / Previous Song Button (-): Short press for volume down, long press for previous song.
- Microphone: Built-in for hands-free calling in RX mode.
- Charge Indicator: Shows charging status.
- USB-C Female Charging Port: For charging the device.
- Slide Switch (RX/TX): Toggles between Receiver (RX) and Transmitter (TX) modes.
- Bluetooth Indicator: Red light for TX mode, Blue light for RX mode.
- 3.5mm Audio Jack: For connecting to audio devices.
4. Setup
4.1 Charging the Adapter
- Locate the USB-C charging port on the adapter.
- Connect the provided USB-C charging cable to the adapter and a USB power source (e.g., computer USB port, USB wall adapter).
- The charge indicator light will illuminate during charging.
- A full charge takes approximately 2.5 hours. The indicator light will change or turn off once fully charged.
4.2 Mode Selection
The adapter features a slide switch to select between Receiver (RX) and Transmitter (TX) modes.

- RX Mode: Slide the switch to 'RX'. The Bluetooth indicator will flash blue. Use this mode to receive audio from a Bluetooth source (e.g., phone) and output it to a non-Bluetooth device (e.g., wired speaker).
- TX Mode: Slide the switch to 'TX'. The Bluetooth indicator will flash red. Use this mode to transmit audio from a non-Bluetooth source (e.g., TV) to a Bluetooth receiving device (e.g., Bluetooth headphones).
5. Operating Instructions
5.1 Basic Button Functions
| Button | Function | Operation |
|---|---|---|
| Play/Pause (Middle Button) | Power on/off | Hold long press for 3 seconds |
| Play/Pause (Middle Button) | Music play/pause (TX mode doesn't support) | Short press |
| + | Volume up/Next song | Short press for volume up, long press for next song |
| - | Volume down/Previous song | Short press for volume down, long press for previous song |
| RX/TX Switch | Transmitter/Receiver mode switch | Toggle the switch |
5.2 Receiver (RX) Mode
In RX mode, the BT16 adapter allows non-Bluetooth audio devices to receive audio wirelessly from Bluetooth-enabled devices like smartphones, tablets, or laptops. The Bluetooth indicator will be blue.

- Switch the adapter to RX mode using the slide switch. The blue indicator light will flash.
- Insert the 3.5mm audio jack of the BT16 into the AUX input port of your non-Bluetooth audio device (e.g., car stereo, wired speaker, home stereo system).
- Power on the BT16 by long-pressing the Play/Pause button for 3 seconds. The blue indicator will flash rapidly, indicating it's in pairing mode.
- On your Bluetooth-enabled device (e.g., smartphone), go to Bluetooth settings and search for "BT-16".
- Select "BT-16" to pair. Once connected, the blue indicator light will stop flashing and remain solid.
- You can now stream audio wirelessly from your Bluetooth device to your non-Bluetooth audio system.
Hands-free Calling (RX Mode Only)
In RX mode, the built-in microphone allows for hands-free calls when connected to your smartphone.

- Answer/End Call: Short press the Play/Pause button.
- Reject Call: Long press the Play/Pause button.
5.3 Transmitter (TX) Mode
In TX mode, the BT16 adapter transmits audio from non-Bluetooth sources (like TVs or computers) to Bluetooth receiving devices (like Bluetooth headphones or speakers). The Bluetooth indicator will be red.

- Switch the adapter to TX mode using the slide switch. The red indicator light will flash.
- Insert the 3.5mm audio jack of the BT16 into the audio output port of your non-Bluetooth audio source (e.g., TV, computer, projector, TV box).
- Power on the BT16 by long-pressing the Play/Pause button for 3 seconds. The red indicator will flash rapidly, indicating it's in pairing mode.
- Put your Bluetooth receiving device (e.g., headphones, speaker) into pairing mode.
- The BT16 will automatically search for and pair with nearby Bluetooth devices. Once connected, the red indicator light will stop flashing and remain solid.
- Audio from your source device will now be transmitted wirelessly to your Bluetooth headphones or speaker.

6. Specifications
| Feature | Specification |
|---|---|
| Model Name | JS-6726-BT16 (BT16) |
| Brand Name | JINSERTA |
| Item Type | FM Transmitters (Bluetooth Audio Adapter) |
| Bluetooth Version | V5.2 |
| Working Range | 10m (without obstacles) |
| Battery Capacity | 120mAh |
| Charging Time | Approx. 2.5 hours |
| Usage Time (Music/Calls) | Approx. 5 hours |
| Standby Time | Approx. 100 hours |
| Microphone | Supported in RX mode only |
| Connector | 3.5mm Audio Jack |
| Charging Port | USB-C |
| Material | ABS+PC |
| Item Weight | 12g (Net), 60g (Item Weight from product properties, likely including packaging) |
| Product Dimensions | 99 x 20 x 12mm (approx. 3.86 x 0.79 x 0.47 inches) |
| Voltage | 12 V (likely input voltage for charging, or car compatibility) |
| Certification | CE |

7. Troubleshooting
If you encounter issues with your JINSERTA BT16 adapter, please refer to the following common solutions:
- Device not powering on: Ensure the adapter is fully charged. Connect it to a power source using the provided USB-C cable.
- Cannot pair with a device:
- Ensure the adapter is in the correct mode (RX for receiving, TX for transmitting). The indicator light should be flashing rapidly (blue for RX, red for TX) to indicate pairing mode.
- Make sure the adapter is within the 10m working range of the target device.
- Check that the target device's Bluetooth is enabled and discoverable.
- Try restarting both the adapter and the target device.
- Clear previous Bluetooth connections on both devices if possible.
- No audio or poor audio quality:
- Verify that the 3.5mm audio jack is fully inserted into both the adapter and the audio device.
- Check the volume levels on both the adapter and the connected audio device.
- Ensure there are no obstacles between the adapter and the paired Bluetooth device that could interfere with the signal.
- Confirm that the correct audio input/output is selected on your external audio system (e.g., AUX input on a car stereo).
- Hands-free calling not working (RX mode):
- Ensure the adapter is successfully paired with your smartphone in RX mode.
- Check your smartphone's Bluetooth settings to confirm that "Call audio" is enabled for the "BT-16" connection.
- Make sure the microphone on the adapter is not obstructed.
8. Maintenance
To ensure the longevity and optimal performance of your JINSERTA BT16 adapter, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the adapter. Do not use liquid cleaners or aerosols.
- Storage: Store the device in a cool, dry place away from direct sunlight and extreme temperatures.
- Avoid Damage: Do not drop, disassemble, or attempt to repair the device yourself. This may void the warranty and cause damage.
- Charging: Use only the provided charging cable or a certified USB-C cable. Avoid overcharging the battery.
9. User Tips
- For best audio quality, ensure the adapter is fully charged before extended use.
- When switching between TX and RX modes, always ensure the adapter is powered off first, then slide the switch, and power it back on.
- If experiencing connection issues, try moving closer to the paired device to minimize interference.
- The compact size makes it ideal for travel; remember to pack the charging cable.
10. Warranty and Support
This product is covered by a standard manufacturer's warranty against defects in materials and workmanship. For warranty claims or technical support, please contact your retailer or the manufacturer directly. Keep your proof of purchase for warranty validation.





