From the manufacturer

JBL Tune Flex 2

6 mics for perfect calls and customized call experience

6 mics for perfect calls and customized call experience Two beamforming outer mics on each earbud pick up your voice and deliver it as clearly as possible, while one inner mic isolates noise.

JBL Tune Flex 2 Adaptive noise canceling with Smart Ambient

JBL Tune Flex 2 earbuds use Adaptive Noise Canceling to tune out noises entirely or just let in as much of the outside world as you want. Ambient Aware adapts how much of the outside world you want to hear, while TalkThru lets you talk with those around you—all without taking your earbuds out.

JBL Tune Flex 2

Enjoy up to 8 hours of playtime, plus another three full charges (24 hours) in the charging case with ANC on, or up to 12 hours plus 36 hours with ANC off.

JBL Tune Flex 22 ear tip sound modes

Choose open ear tips to stay aware of your surroundings while wearing your earbuds. Or seal off the world and improve the passive noise canceling with your choice of three sizes of sealing ear tip