Model: FC9257BX6
This manual provides detailed instructions for the proper use and maintenance of your Retevis Covert Acoustic Tube Earpiece. Designed for clear and discreet communication, this earpiece is compatible with various Motorola two-way radios. Please read this manual thoroughly before operating the device to ensure optimal performance and longevity.
The package includes the following items:

Figure 1: Package Contents - Six earpieces and six spare earbuds are included.
This earpiece is equipped with an M-head 2-pin connector and is compatible with a wide range of Motorola two-way radios, including but not limited to:
Note: This earpiece is not compatible with any Retevis brand walkie-talkies.

Figure 2: Earpiece with M-Head 2-Pin Connector.
The acoustic tube is designed to be detachable for cleaning and replacement. To attach or detach, gently twist and pull the tube from the earpiece base. Ensure it is securely reattached before use.

Figure 3: Detaching and Reattaching the Acoustic Tube.
Place the acoustic tube into your ear. The earpiece is designed for comfortable wear on either the left or right ear. Adjust the clear acoustic tube for a secure and comfortable fit.

Figure 4: Comfortable Earpiece Fit.
Insert the M-head 2-pin connector firmly into the corresponding port on your compatible two-way radio. Ensure a snug connection for optimal audio transmission and reception.
Use the integrated volume adjustment switch on the earpiece cable to set the desired listening volume. This allows for clear reception in various environments without needing to access the radio's controls.

Figure 5: Volume Adjustment Control.
To transmit, press and hold the large PTT button located on the earpiece cable. Speak clearly into the microphone. Release the button to stop transmitting and return to receive mode. The PTT button is designed for easy activation, even with gloved hands.

Figure 6: Push-to-Talk (PTT) Button.

Figure 7: Replacing the Earbud.
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound from earpiece. | Loose connection, radio volume too low, earpiece faulty. | Ensure the 2-pin connector is fully inserted. Increase radio volume. Test with another earpiece if available. |
| Unclear or distorted sound. | Acoustic tube blockage, loose connection, radio interference. | Clean the acoustic tube. Re-seat the connector. Move away from potential interference sources. |
| PTT button not transmitting. | Loose connection, PTT button malfunction. | Check the 2-pin connector. Ensure the PTT button is fully pressed. |
| Feature | Detail |
|---|---|
| Model Number | FC9257BX6 |
| Connector Type | M-Head 2-Pin |
| Cable Material | Kevlar Reinforced |
| Cable Length (Coiled) | Up to 88 cm (35 inches) |
| Speaker Type | Electromagnetic |
| Special Features | Volume Adjustment, Detachable Acoustic Tube, Large PTT Button |
| Product Dimensions | 8.62 x 6.18 x 1.89 inches |
| Item Weight | 11.1 ounces |
Video 1: Retevis Covert Acoustic Tube Earpiece Overview. This video demonstrates the features and usage of the earpiece, including its comfortable design, detachable tube, volume control, PTT key, M 2-pin connector, coiled cable, and Kevlar reinforced cable for durability.
For warranty information and technical support, please refer to the documentation included with your purchase or visit the official Retevis website. Keep your purchase receipt for warranty claims.
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