Electronics / Headphones Earbuds
User Guide for Trevi DJ 12E42 BT Bluetooth Stereo Headset
Quick start guide for the Trevi DJ 12E42 BT headset, covering battery charging, Bluetooth pairing, music playback, call management, and technical specifications.
Table of contents
Quick guide from the manual
This document provides essential instructions for operating the Trevi DJ 12E42 BT Bluetooth stereo headset. Key procedures include charging the internal battery, pairing the device with a smartphone or tablet, managing music playback, and handling phone calls. Please note that the FM radio function is only available on specific export versions.
Battery charging
The headset features an internal rechargeable battery. For the first use, charge the device for 3-4 hours. A full charge provides approximately 10 hours of playback.
- Connect the included USB Type-C cable to the headset and an external power source (5V).
- The LED indicator (5) will turn red during charging and blue when fully charged.
- When the battery is low, you will hear a voice prompt, and the headset will turn off automatically.
Power on and off
Press and hold the Power button (3) for a few seconds to turn the device on or off. A voice prompt will confirm the status. The headset will automatically turn off after a period of inactivity if no Bluetooth connection is active.
Pairing with a Bluetooth device
- Turn on the headset; the LED (5) will flash blue and red.
- Enable Bluetooth on your external device and search for DJ12E42BT.
- Select the device to pair; the voice guide will confirm the connection.
Keep devices within one meter during pairing. The maximum operating range is approximately 10 meters.
Music playback and call handling
Use the buttons on the headset to control your media:
- Play/Pause: Press button (3) once.
- Next song: Press button (4).
- Previous song: Press button (2).
- Volume up: Press and hold button (4).
- Volume down: Press and hold button (2).
- Answer/End call: Press button (3) once.
- Reject call: Press and hold button (3).
- Redial last number: Quickly press button (3) twice.
Micro SD card and wired mode
To play music from a Micro SD card, insert the card into slot (6) and press button (3) three times to select the Play by TF card mode. Alternatively, you can use the headset as a passive device by connecting it via a 3.5mm audio cable to an external source.
Safety and maintenance
Do not expose the device to moisture, heat sources, or strong vibrations. Keep the device on a flat surface with at least 10 cm of space for ventilation. Battery removal should only be performed by qualified personnel.
Manufacturer information
TREVI S.p.A.
Practical help
Common problems
Bluetooth connection drops
Ensure devices are within range (max 10m). If the connection is lost, you may need to repeat the pairing procedure.
Battery life seems short
Ensure the battery is fully charged before use. Avoid partial charge cycles; let it discharge fully and then charge completely.
Device does not turn on
Check if the battery is charged. Connect to a 5V power source using the provided USB Type-C cable.
Before use
- Charge the headset for 3-4 hours before the first use.
- Ensure the charging source provides 5V.
- Keep the headset within 1 meter of the device during initial pairing.
- Ensure the Micro SD card is inserted with contacts facing outward.
- Verify that the environment is dry and free from extreme heat.
Specs in practice
- Bluetooth V5.1
- The version of wireless technology used for stable connection.
- 800mAh Battery
- Capacity of the internal rechargeable lithium battery.
- 5V Charging Voltage
- Required input voltage for safe battery charging.
Model compatibility
- FM Radio function is only available on specific export versions.
- Some devices may not be fully compatible with the headset due to Bluetooth technology evolution.
- Wired mode bypasses internal controls; playback is managed by the source device.
Manual page author
Emily Carter
User documentation editor
Prepares concise manual descriptions and highlights the most useful setup, operation, and maintenance information for readers.