Introduction
Thank you for choosing the VONMÄHLEN Wireless Concert One On-Ear Bluetooth Headphones. These headphones are designed to provide a superior wireless audio experience with comfort and style. This manual will guide you through the setup, operation, and maintenance of your new headphones.

Image: A woman wearing the rose gold VONMÄHLEN Wireless Concert One headphones, enjoying music outdoors.
Package Contents
Please check the package for the following items:
- VONMÄHLEN Wireless Concert One On-Ear Bluetooth Headphones
- Water-resistant travel case
- Micro-USB charging cable
- 3.5mm audio cable (AUX cable)
- 2x Cable managers

Image: All accessories included with the headphones, neatly arranged.
Product Overview
The VONMÄHLEN Wireless Concert One headphones feature an adjustable headband and memory foam earcups for comfortable wear. The earcups also house the control buttons and ports.

Image: A detailed view of the headphone's ear cup and headband, highlighting the design and materials.

Image: A close-up showing the power button, volume controls, and other functional buttons on the headphone's earcup.
Setup
1. Charging the Headphones
Before first use, fully charge your headphones. Connect the micro-USB charging cable to the charging port on the headphones and the other end to a USB power source (e.g., computer USB port, USB wall adapter).
- The LED indicator will show the charging status.
- A full charge provides over 21 hours of playback.
2. Powering On/Off
To power on, press and hold the power button until the LED indicator lights up. To power off, press and hold the power button again until the LED indicator turns off.
3. Bluetooth Pairing
- Ensure the headphones are powered off.
- Press and hold the power button for approximately 5-7 seconds until the LED indicator flashes blue and red, indicating pairing mode.
- On your device (smartphone, tablet, computer), enable Bluetooth and search for available devices.
- Select "VONMÄHLEN Concert One" from the list of devices.
- Once paired, the LED indicator will flash blue slowly.
If prompted for a password, enter "0000".
The headphones will automatically attempt to reconnect to the last paired device when powered on.
Operating Instructions
Controls
The multifunctional controls on the earcups allow for easy management of your audio and calls:
- Power Button: Press and hold to power on/off. Short press to play/pause music or answer/end calls.
- Volume Up (+): Short press to increase volume. Long press for next track.
- Volume Down (-): Short press to decrease volume. Long press for previous track.
Making and Receiving Calls
- Answer/End Call: Short press the Power button.
- Reject Call: Press and hold the Power button for 2 seconds.
- Redial Last Number: Double-press the Power button.
Using the AUX Cable
To use the headphones with a wired connection, simply plug the 3.5mm audio cable into the AUX port on the headphones and your audio device. The Bluetooth function will automatically disable when the AUX cable is connected.
Maintenance
To ensure the longevity and optimal performance of your VONMÄHLEN Wireless Concert One headphones, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the headphones. Do not use abrasive cleaners or solvents.
- Storage: When not in use, store the headphones in the provided water-resistant travel case to protect them from dust, scratches, and impacts.
- Temperature: Avoid exposing the headphones to extreme temperatures (hot or cold) or high humidity.
- Water Exposure: The travel case is water-resistant, but the headphones themselves are not waterproof. Avoid direct contact with water.

Image: The headphones safely stored in their water-resistant travel case, ready for transport.
Troubleshooting
| Problem | Solution |
|---|---|
| Headphones do not power on. | Ensure the headphones are fully charged. Connect to a power source and check the charging indicator. |
| Cannot pair with a device. |
|
| No sound or poor audio quality. |
|
| Headphones frequently disconnect. |
|
Specifications
- Brand: VONMÄHLEN
- Model Name: R050P0002-WCO
- Color: Rose Gold
- Ear Placement: On-ear
- Form Factor: On-ear
- Noise Control: None
- Headphone Jack: 3.5 mm Jack
- Connectivity Technology: Wireless (Bluetooth)
- Wireless Communication Technology: Bluetooth
- Battery Life: Up to 21 hours (approximate)
Safety Information
Please read and follow these safety guidelines to prevent damage to your headphones or injury to yourself:
- Do not disassemble, repair, or modify the headphones.
- Do not expose to extreme temperatures, direct sunlight, or fire.
- Avoid listening at high volume levels for extended periods to prevent hearing damage.
- Keep out of reach of children and pets.
- Use only the provided charging cable or a certified equivalent.
Warranty and Support
VONMÄHLEN products are designed with quality and durability in mind. For warranty information, technical support, or any questions regarding your Wireless Concert One headphones, please visit the official VONMÄHLEN website or contact their customer service directly. Please retain your proof of purchase for warranty claims.
For more information, visit: www.vonmaehlen.com
Product Video
Watch this video for a visual overview of the VONMÄHLEN Wireless Concert One headphones and their features.
Video: An overview of the VONMÄHLEN Wireless Concert One headphones, showcasing their design, sound, and key features like Bluetooth and Qualcomm aptX.