User Guide for Trevi 12E42 Bluetooth Headphones

Quick guide from the manual

This guide provides essential instructions for operating the Trevi 12E42 Bluetooth headphones. Key operations include charging the internal battery, pairing with external devices, managing music playback, and handling phone calls. Please note that the device should be kept away from heat sources, moisture, and strong vibrations to ensure longevity.

Battery charging

The headphones feature an internal rechargeable battery. For the first use, charge the device for 3-4 hours. A full charge provides approximately 10 hours of music playback.

• Connect the included USB/USB Type-C cable to an external USB port (computer, tablet) or a 5V USB power supply.
• Connect the cable to the charging socket (1). The red LED (7) will light up during charging.
• The LED (7) will turn blue when charging is complete.
• If the battery is low, a voice message will announce Battery low, and the device will automatically turn off.

Powering on and off

Press and hold the Power button (3) for a few seconds to turn the device on or off. A voice message will confirm the status. The device will automatically turn off after a period of inactivity if no Bluetooth connection is active.

Bluetooth pairing

1. Turn on the device; the LED (7) will flash blue and red.
2. The voice guide will announce Bluetooth mode.
3. Enable Bluetooth on your external device and search for DJ12E42BT.
4. Select the device to pair. The voice guide will announce Connecting.

Music playback and call handling

Use the buttons on the headphones to control playback and calls:

• 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: Long press button (3).
• Redial last number: Quickly press button (3) twice.

Additional features

The headphones support music playback via a microSD card (insert with contacts facing outward) and include a 3.5mm audio jack for wired use as passive headphones. Some versions may include FM radio functionality, accessible by pressing the power button three times to cycle through modes.

Safety and maintenance

To prevent hearing damage, avoid listening at high volumes for extended periods. Keep the device on a flat surface with at least 10 cm of space for ventilation. Do not expose the device to water or naked flames. Battery removal should only be performed by qualified technical personnel.