JBL JBLT520BTPUREU
JBL Tune 520 BT Wireless Headphones
User Manual
Introduction
Thank you for choosing the JBL Tune 520 BT Wireless Headphones. These headphones are designed to provide a superior audio experience with the signature JBL Pure Bass Sound, combined with the convenience of wireless connectivity and long-lasting battery life. This manual will guide you through the setup, operation, and maintenance of your new headphones.

Image: JBL Tune 520 BT Wireless Headphones, violet color, shown from a slight angle.
Setup
1. Charging the Headphones
Before first use, fully charge your JBL Tune 520 BT headphones. Connect the included USB-C charging cable to the headphone's charging port and a power source. A full charge takes approximately 2 hours. A quick 5-minute charge provides up to 3 hours of additional music playback.
2. Power 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 until the LED indicator turns off.
3. Bluetooth Pairing
The JBL Tune 520 BT headphones utilize Bluetooth 5.3 for stable and efficient wireless connection.
- Ensure the headphones are powered off.
- Press and hold the Power button for approximately 5 seconds until the LED indicator flashes blue, indicating pairing mode.
- On your device (smartphone, tablet, computer), enable Bluetooth and search for available devices.
- Select "JBL Tune 520 BT" from the list of devices to connect.
- Once connected, the LED indicator will turn solid blue.
Fast Pair (Android): For Android 6.0+ devices, simply turn on the headphones near your device, and a pop-up notification will appear for quick pairing.
Microsoft Swift Pair (Windows): For Windows 10 v1803+ devices, turn on the headphones near your PC, and a notification will appear to initiate pairing.

Image: Front view of the JBL Tune 520 BT headphones, showing the earcups and headband.
Operating
1. Basic Controls
| Function | Action |
|---|---|
| Volume Up | Press the '+' button |
| Volume Down | Press the '-' button |
| Play/Pause | Press the multi-function button once |
| Next Track | Double-press the multi-function button |
| Previous Track | Triple-press the multi-function button |
| Answer/End Call | Press the multi-function button once |
| Reject Call | Press and hold the multi-function button |
| Activate Voice Assistant | Press the multi-function button twice (after a call) |
2. Multi-point Connection
The JBL Tune 520 BT supports multi-point connection, allowing you to seamlessly switch between two Bluetooth devices. For example, you can watch a video on your tablet and effortlessly switch to answer a call on your mobile phone without re-pairing.
3. JBL Headphones App
Enhance your listening experience by downloading the free JBL Headphones App. The app provides customizable sound settings, including bass and treble adjustments, to personalize your audio to your preferences.

Image: A person wearing the JBL Tune 520 BT headphones, demonstrating comfortable use.
Maintenance
1. Battery Care
To ensure optimal battery life and performance, fully recharge your headphones at least once every three months, even if not in regular use. Battery life may vary depending on usage and settings.
2. Cleaning
Gently wipe the headphones with a soft, dry cloth. Do not use liquid cleaners or abrasive materials, as they may damage the finish or internal components. Keep the charging port free of dust and debris.
3. Storage
When not in use, store your headphones in a cool, dry place, away from direct sunlight and extreme temperatures. The foldable design allows for compact storage and easy portability.

Image: The JBL Tune 520 BT headphones shown in their folded position, highlighting their portability.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| Headphones do not power on | Low battery | Charge the headphones fully. |
| Cannot pair with device | Headphones not in pairing mode; Device Bluetooth off; Out of range | Ensure headphones are in pairing mode (flashing blue LED). Turn on Bluetooth on your device. Move headphones closer to the device. |
| No sound or low volume | Volume too low; Not connected; Incorrect audio output selected | Increase headphone and device volume. Ensure headphones are connected. Check device's audio output settings. |
| Poor sound quality | Interference; Out of range; Low battery | Move away from other wireless devices. Move closer to the source device. Recharge headphones. |
Specifications
| Feature | Detail |
|---|---|
| Model Name | Tune 520BT |
| Connectivity Technology | Wireless (Bluetooth 5.3) |
| Battery Life | Up to 57 hours |
| Charge Time | 2 hours (5 min charge for 3 hours playback) |
| Weight | 157 Grams |
| Frequency Range | 20 Hz - 20 KHz |
| Impedance | 30 ohms |
| Sensitivity | 102 dB |
| Charging Port | USB-C |
| Material | Plastic |
| Color | Violet |
| Included Components | Headphones, USB-C Cable, Warning Sheet, FAQ Sheet |

Image: The retail box of the JBL Tune 520 BT headphones, showing the included accessories.
Warranty and Support
JBL products are designed for durability and performance. For warranty information and detailed support, please refer to the warranty card included in your product packaging or visit the official JBL support website. You can also find additional resources and FAQs on the JBL brand store.
For further assistance, please visit: JBL Brand Store
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