• NOTE: If headset is too tight we suggest placing them over a ball or something of similar size/shape. Leave undisturbed for at least 24 hours. Repeat if necessary. Please also try length adjustments of either earpiece until both sides best fit you.

• JBL Pure Bass Sound: The JBL Tune 520BT features the renowned JBL Pure Bass sound, the same technolgy that powers the most famous venues all around the world.

• Wireless Bluetooth 5.3 technology: Wirelessly stream high quality sound from your smartphone without messy cords with the help of the latest Bluetooth technology.

• Customize your listening experience: Download the free JBL Headphones App to tailor the sound to your taste with the EQ. Voice prompts in your desired language guide you through the Tune 520BT features.

• Up to 57H battery life and speed charge: For long lasting fun, listen wirelessly for up to 57 hours and recharge the battery in as little as 2 hours with the convenient Type C USB cable. A quick 5 minute recharge gives you 3 additional hours of music.

• Hands free calls with Voice Aware: Easily control your sound and manage your calls from your headphones with the convenient buttons on the ear cup. Hear your voice while talking, with the help of Voice Aware.