JBL JBLLIVEFLEX4BLK

JBL Live Flex 4

True wireless Hi-Res audio Noise Cancelling earbuds with Smart Charging Case™

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Features

JBL Signature Sound with Hi-Res Audio

JBL Signature Sound with Hi-Res Audio

12 mm drivers powered by JBL Signature Sound deliver crisp detail, deep bass, and natural balance. Hi-Res Audio Wireless brings out every nuance of your playlists, podcasts, and calls, making everything you hear sound more alive while JBL Spatial Sound transforms ordinary stereo into a natural, three-dimensional listening experience.

Smart Charging Case™ for a seamless experience

Smart Charging Case™ for a seamless experience

The redesigned Smart Charging Case™ doubles as your earbud controller with a simple interface that makes interaction easier than ever. Its intuitive display lets you adjust volume, switch tracks, manage ANC or Ambient Sound, and fine-tune your EQ—no phone or app required.

True Adaptive Noise Cancelling 2.0, real time calibration

True Adaptive Noise Cancelling 2.0, real time calibration

Advanced adaptive processing monitors your surroundings in real time to block out distractions and unwanted noise. Stay immersed in silence, or use the JBL Headphones app to control how much of the outside world you want to let in. With fully adjustable Ambient Sound control, you can choose exactly when to stay focused and when to stay aware. Smart Talk automatically mutes your music whenever it hears you speak, so you can have a quick chat without reaching for the pause button. Use the JBL Headphones app to fine tune the Smart Talk settings.

6-mic Perfect Calls 2.0 with AI-trained algorithm

6-mic Perfect Calls 2.0 with AI-trained algorithm

Six microphones with beamforming technology and intelligent noise reduction cut through background chatter so your voice stays clear and natural. You can even tailor call effects and levels to match your environment.

Up to 50 hours of playtime plus wireless charging

Up to 50 hours of playtime plus wireless charging

Get up to 10 hours in the earbuds and 40 more from the case*. A 10-minute speed charge via USB Type C delivers 4 hours of playback, and Qi wireless charging keeps you powered without cables. (*ANC off)

Next-gen Bluetooth® with LE Audio

Next-gen Bluetooth® with LE Audio

Enjoy lower-power streaming with higher quality and new ways to connect. Join independent unicast streams or tap into AuracastTM broadcasts directly through the JBL Headphones app. It's future-ready listening made simple.

IP54 water- and dust-resistant design

IP54 water- and dust-resistant design

Water and dust-resistant durability lets you keep listening through workouts, commutes, and outdoor adventures with total confidence.

Personi-Fi 3.0

Personi-Fi 3.0

Hear and feel every note of your playlist. Shape your audio to match your personal listening profile with interactive customization tools that use precise information about you and your preferences to provide the exact sound curve that suits you best.

Stay in control with the JBL Headphones app

Stay in control with the JBL Headphones app

Personalize the soundtrack of your life. Just download the free JBL Headphones app to customize the way you listen. Adjust the Adaptive Noise Cancelling to your ears' shape, tweak your ambient sound control settings, create a Relax playlist to help you chill out, or find your earbuds. You can also change how the earbuds behave through gesture customization, or adapt the sound output to audio or video to get the most out of your content—plus much more.

Easy access to Google Finder and Audio Switch

Easy access to Google Finder and Audio Switch

Locate your earbuds instantly through Google’s network and switch connections effortlessly between phone, tablet, or laptop without missing a beat.

Specs & Downloads

Item#: JBLLIVEFLEX4BLK

Product Description

All-day companion

Move through every moment of your day, effortlessly in tune with JBL Live Flex 4. JBL Signature Sound with Hi-Res audio accuracy and Spatial Sound makes every playlist, podcast, and voice call sound sharper, richer, and more alive. True Adaptive Noise Cancelling 2.0 automatically clears away distractions, while Smart Ambient keeps you connected to what’s around you. Just tap the even more convenient display on the redesigned Smart Charging Case™ to adjust volume, skip tracks, or fine-tune your sound—while your phone stays in your pocket. Six microphones with AI-trained noise reduction keep your voice clear and natural, while the streamlined Flex-style design stays secure through commutes, light workouts, and late-night listens. With up to 50* hours of playtime and IP54 water- and dust-resistant durability, Live Flex 4 connects you seamlessly, from the responsibilities of your day to the soundtrack of your night. (*with ANC off)

General Specifications

Driver size 12 mm / 0.47'' Dynamic Driver
Power supply 5 V ⎓1 A
Maximum operation temperature 40 °C
IP 54

Audio Specifications

Frequency response 20 Hz - 40 kHz
Impedance 16 ohm
Sensitivity 98 dB SPL@1 kHz
Maximum SPL 95 dB
Microphone sensitivity -38 dBV/Pa@1 kHz

Dimensions

Earbuds 4.5 g per pc (9 g combined)/0.0099 lbs per pc (0.0198 lbs combined)
Charging case 67.1 g / 0.1479 lbs

Control and Connection Specifications

Bluetooth version (Earbud) 6.0
Bluetooth version (Charging Case) 6.0
Bluetooth profile version A2DP V1.4, AVRCP V1.6.3, HFP V1.8
Bluetooth transmitter frequency range 2.4 GHz - 2.4835 GHz
Bluetooth transmitter power (Earbud) < 8 dBm (EIRP)
Bluetooth transmitter power (Charging Case) < 15 dBm (EIRP)
Bluetooth transmitter modulation (Earbud) GFSK, π/4-DQPSK
Bluetooth transmitter modulation (Charging case) GFSK

Battery

Earbud battery type Lithium-ion battery (44 mAh / 3.85 V)
Charging case battery type Lithium-ion battery (580 mAh / 3.85 V)
Charging time 2 hrs from empty
Music playtime with BT on and ANC off Up to 10 hrs
Music playtime with BT on and ANC on Up to 7 hrs
Music playtime with BT on and True Adaptive ANC on Up to 6 hrs
Talk time with ANC off Up to 4 hrs
Talk time with ANC on Up to 3.5 hrs

What's in the box?

  • 1 x JBL Live Flex 4 earbuds
  • 1 x Charging Case
  • 1 x Warranty / Warning (W / !)
  • 1 x QSG / Safety Sheet (S / i)
JBL CLub One Box visual

Documents & Downloads

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