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JBL Live Flex 4 Black
Wireless earbuds - Adaptive Noise Cancellation 2.0 - IP54 - Bluetooth 6.0 - Controls/Microphone - 10 + 40h battery life - Charging/carry case with touchscreen
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Immersive sound that keeps up with every moment
Designed to keep pace with your whole day, the JBL Live Flex 4 combine JBL Signature Sound with high-resolution audio precision and JBL Spatial Sound. Their 12 mm dynamic drivers deliver crisp details, deep bass and a natural balance, while Adaptive Noise Cancellation 2.0 analyses the environment in real time to reduce distractions. Smart Ambient lets you stay aware of outside sounds when the situation calls for it. Designed for commuting, light workouts and nighttime listening alike, these earbuds with a Flex design are water- and dust-resistant to IP54. Their battery life can reach a total of 50 hours with noise cancellation turned off.
A smart case and crystal-clear calls
A true control center, the new Smart Charging Case features an intuitive display for adjusting volume, changing tracks, managing noise cancellation or Ambient Sound mode and adjusting EQ, without taking out your phone or opening the app. For conversations, the JBL Live Flex 4 rely on six microphones, beamforming technology and an AI-trained noise reduction algorithm. This keeps voices clear and natural, even in busy environments. The Smart Talk feature automatically detects when the user speaks and pauses the music to make spontaneous conversations easier.
Connected technologies for personalized listening
Thanks to Personi-Fi 3.0, the sound output can be tailored to each listener’s hearing profile and preferences. The JBL Headphones app also lets you fine-tune Adaptive Noise Cancellation, adjust the level of ambient sounds, customize control gestures and optimize playback for audio and video. Next-generation Bluetooth with Audio LE ensures low-power streaming and gives access to unicast streams as well as Auracast broadcasts from the app. Google Finder makes it easier to locate the earbuds, while Audio Switch makes it easy to switch from a phone to a tablet or a laptop. Finally, fast charging provides up to 4 hours of listening in just 10 minutes, and Qi compatibility lets you charge the case wirelessly.
Key features:
- Earbuds wireless
- Drivers: 12 mm dynamic
- Sound signature: JBL Signature Sound
- Frequency response: 20 Hz to 40 kHz
- Impedance: 16 ohms
- Sensitivity: 98 dB SPL at 1 kHz
- Maximum sound pressure level: 95 dB
- Microphone sensitivity: -38 dBV/Pa at 1 kHz
- Number of microphones: 6
- Bluetooth version: 6.0
- Audio connectivity: Bluetooth with Audio LE, unicast streams and Auracast
- Lithium-ion battery
- Time required for a full charge: 2 hours
- Fast charge: up to 4 hours of playback after 10 minutes of USB Type-C charging
- Wireless charging: Qi compatible
- Music playback time with Bluetooth connection and ANC disabled: up to 10 hours
- Total battery life with the case and ANC disabled: up to 50 hours, including 40 hours provided by the case
- Audio technologies: JBL Signature Sound, high-resolution wireless audio and JBL Spatial Sound
- Noise cancellation: true Adaptive Noise Cancellation 2.0 with real-time calibration
- Sound environment management features: Smart Ambient, Ambient Sound and Smart Talk
- Sound customization: Personi-Fi 3.0
- Compatible app: JBL Headphones
- Compatible services: Google Finder and Audio Switch
- Case controls: volume, track change, ANC management, Ambient Sound and EQ adjustment
- Earbud weight: 4.5 g per unit, 9 g for both
- Charging case weight: 67.1 g
- 1x pair of JBL Live Flex 4 earbuds
- 1x charging case
- 1x warranty/warnings booklet
- 1x quick start guide/safety sheet
Select your criteria
General information |
Product name |
JBL Live Flex 4 Black |
Brand |
JBL | |
Model |
JBLLIVEFLEX4BLK | |
Design |
Headset type |
In-ear |
Headphones configuration |
Closed back | |
Ear coupling |
In-ear | |
Use |
Hi-Fi | |
| Telephony | ||
Foldable |
No | |
High-Res audio |
No | |
Active noise cancelling |
Yes | |
Audio specifications |
Speaker diameter |
12 mm |
Bandwidth (Min frequency) |
20 Hz | |
Bandwidth (Max frequency) |
40 kHz | |
Impedance |
16 Ohm | |
SPL Max |
98 dB SPL | |
Connectivity |
Remote control |
No |
Volume control |
No | |
Connector(s) |
Bluetooth | |
Wireless |
Wireless |
Yes |
True Wireless |
Yes | |
Wireless charging compatible |
No | |
Bluetooth |
Yes | |
Bluetooth technology |
Bluetooth 6.0 | |
Auracast Bluetooth |
Yes | |
NFC |
No | |
Integrated voice assistant |
Without voice assistant | |
Power supply type |
Lithium-ion battery | |
Battery life |
10 Hour(s) | |
Physical characteristics |
Color |
Black |
Headphone weight |
9 g | |
Receiver weight |
67.1 g | |
Warranties |
Commercial warranty |
Seller 2 years
|
Legal warranty |
See terms & conditions
Harmonised legal guarantee notice
|
|
Safety Information |
Responsible person |
Harman International Industries, Incorporated EMEA Liaison Office |
Postal address |
Danzigerkade 16, 1013 AP Amsterdam, Pays Bas | |
Electronic Address |
Click here
|
See all JBL products
Product referenced on 28 Jul 2026
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