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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 FEATURES

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.

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.

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.

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.

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)

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.

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

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

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.

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

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

General Specifications

  • Driver size: 12 mm / 0.47’’ Dynamic Driver
  • Power supply: 5 V ⎓1 A
  • Maximum operation temperature: 40 °C
  • IP rating: IP54

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

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

Dimension Specifications

  • 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

Battery Specifications

  • 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

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