1. Introduction
The JBL Tune Flex 2 true wireless earbuds are designed to provide an immersive audio experience with advanced features for daily use. These earbuds offer exceptional JBL Pure Bass Sound and JBL Spatial Sound, ensuring a rich and dynamic listening experience for music, movies, and games.
Equipped with Adaptive Noise Cancelling and Smart Ambient technology, the Tune Flex 2 allows you to control your audio environment, whether you want to block out distractions or stay aware of your surroundings. With 6 microphones, calls are crystal clear, even in noisy conditions. The ergonomic design ensures comfort for extended wear, and the IP54 dust and water resistance provides durability for various activities.

Figure 1.1: JBL Tune Flex 2 Earbuds and Charging Case (Black)
Key Features:
- JBL Pure Bass Sound (12mm dynamic drivers) & Spatial Sound: Transforms stereo sound into an immersive experience.
- Adaptive Noise Cancelling & Smart Ambient: Tune out noise or engage with your surroundings.
- 6 Mics for Perfect Calls: Environmental noise cancellation and echo suppression for clear voice.
- Up to 48 Hours Total Playback: 8 hours with ANC on (plus 24 from case), or 12 hours with ANC off (plus 36 from case).
- IP54 Dust & Water Resistant: Durable design for all-day comfort in any weather.
- JBL Headphones App: Personalize sound, adjust ANC levels, create playlists, check fit, and update firmware.
2. What's in the Box
Upon unboxing your JBL Tune Flex 2, please ensure all the following components are present:
- 1 x JBL Tune Flex 2 headphones (earbuds)
- 1 x Type-C USB charging cable
- 1 x Charging case
- 3 sizes of ear tips (sealed type)
- 1 x size open ear tips
- 1 x Warranty / Warning (W / !) document
- 1 x Product Quick Start Guide (QSG) / Safety Sheet (S / i)

Figure 2.1: Included accessories: USB-C charging cable and various ear tips.
3. Setup
3.1 Initial Charging
Before first use, fully charge your JBL Tune Flex 2 earbuds and charging case. Connect the provided Type-C USB charging cable to the charging port on the case and a power source. The indicator lights on the case will show the charging status. A full charge takes approximately 2 hours.

Figure 3.1: JBL Tune Flex 2 Charging Case.
3.2 Pairing with Your Device
- Open the charging case. The earbuds will automatically enter pairing mode.
- On your device (smartphone, tablet, laptop), go to Bluetooth settings.
- Select "JBL Tune Flex 2" from the list of available devices.
- Once connected, you will hear an audible confirmation.
The earbuds support multi-point connection, allowing them to be paired with two devices simultaneously.
3.3 JBL Headphones App
Download the JBL Headphones app from your device's app store (Google Play Store or Apple App Store) for full customization and control over your earbuds. The app allows you to:
- Adjust Adaptive Noise Cancelling levels.
- Tweak Ambient Sound Control settings.
- Create personalized sound profiles.
- Check for firmware updates.
- Utilize the "Find My Earbuds" feature.
4. Operating Your Earbuds
4.1 Audio Experience
The JBL Tune Flex 2 delivers JBL Pure Bass Sound through 12mm dynamic drivers. Activate JBL Spatial Sound via the app to transform any stereo source into a more immersive audio experience.

Figure 4.1: Experience JBL Pure Bass Sound with Spatial Audio.
4.2 Noise Control
Utilize Adaptive Noise Cancelling to block out unwanted background noise, allowing you to focus on your audio. For situations where you need to be aware of your surroundings, activate Smart Ambient mode. TalkThru mode allows you to converse with others without removing your earbuds, by lowering music volume and amplifying voices.

Figure 4.2: Adaptive Noise Cancelling with Smart Ambient.
4.3 Call Management
The earbuds feature 6 microphones with environmental noise cancellation and echo suppression algorithms. This ensures your voice is captured clearly and without distortion, even in windy or noisy environments, providing perfect calls on both ends.
4.4 Battery Life
Enjoy extended listening with up to 8 hours of playtime with Active Noise Cancelling (ANC) enabled. The charging case provides an additional three full charges, totaling up to 32 hours of playback. With ANC off, the earbuds offer up to 12 hours of playtime, and the case extends this to a total of 48 hours.
4.5 Official Product Video
Video 4.1: Official product video showcasing the features and design of the JBL Tune Flex 2 earbuds.
5. Maintenance
5.1 Cleaning
Regularly clean your earbuds and charging case to maintain optimal performance and hygiene. Use a soft, dry, lint-free cloth to wipe down the surfaces. For ear tips, gently remove them and clean with a damp cloth, ensuring they are completely dry before reattaching.
5.2 Water and Dust Resistance
The JBL Tune Flex 2 earbuds are IP54 rated, meaning they are protected against limited dust ingress and water splashes from any direction. While they are resistant to sweat and light rain, they are not designed for submersion in water. Avoid exposing them to strong jets of water or prolonged immersion. Ensure the charging port is dry before charging to prevent damage.

Figure 5.1: Close-up view of JBL Tune Flex 2 earbuds.
6. Troubleshooting
6.1 Connectivity Issues
- Earbuds not pairing: Ensure both earbuds are in the charging case, then open the lid to activate pairing mode. Check your device's Bluetooth settings and try re-pairing.
- Intermittent connection: Move closer to your device. Ensure there are no major obstructions (like walls) between the earbuds and your device. Avoid strong electromagnetic interference.
6.2 Audio Issues
- Low volume or poor sound quality: Ensure ear tips are correctly sized and provide a good seal in your ear. Clean any debris from the earbud nozzles. Adjust equalizer settings in the JBL Headphones app.
- One earbud not working: Place both earbuds back in the charging case, close the lid, wait a few seconds, then open it again. This often re-syncs them. If the issue persists, try resetting the earbuds (refer to the Quick Start Guide for specific reset instructions).
6.3 Call Quality Issues
- People cannot hear you clearly during calls: Ensure the microphones are not obstructed. Try adjusting your position or moving to a quieter environment. The 6-mic array is designed for clarity, but extreme noise can still impact performance.
6.4 Battery Issues
- Earbuds not charging: Ensure the charging cable is securely connected to both the case and the power source. Check if the charging contacts on the earbuds and inside the case are clean and free of debris.
7. Specifications
Feature | Specification |
---|---|
Model Name | JBL Tune Flex 2 |
Connectivity Technology | Wireless (Bluetooth 5.3) |
Noise Control | Adaptive Noise Cancellation |
Audio Driver Size | 12 Millimeters |
Frequency Response | 20 Hz - 20 KHz |
Sensitivity | 98 dB |
Impedance | 13 Ohm |
Battery Life (Earbuds) | Up to 8 hours (ANC on), 12 hours (ANC off) |
Total Playback Time (with case) | Up to 32 hours (ANC on), 48 hours (ANC off) |
Charging Time | 2 Hours |
Water Resistance Level | IP54 (Dust & Water Resistant) |
Control Method | App, Touch |
Item Weight | 41.7 Grams (total) |
Product Dimensions | 2.02 x 1.85 x 1.15 inches |
Manufacturer | JBL |
8. Warranty and Support
8.1 Warranty Information
JBL products are covered by a limited warranty. Please refer to the 'Warranty / Warning (W / !)' document included in your product packaging for detailed terms and conditions regarding warranty coverage, duration, and claims procedures. Keep your proof of purchase for warranty validation.
8.2 Customer Support
For technical assistance, troubleshooting, or product inquiries, please visit the official JBL support website or contact their customer service. You can find contact information and frequently asked questions on the JBL website or in the JBL Headphones app.
Consider purchasing an extended protection plan for additional coverage beyond the standard manufacturer's warranty. Options such as 2-Year or 3-Year Protection Plans may be available from your retailer.