Design and features:This Bluetooth wireless portable ear-insert model provides very good sound. Although it lacks active noise reduction, the ear plug-like design helps to reduce both outside noise and sound leaking out into your environment. The Beats Flex has a volume control plus an integrated microphone and player function controls. Additional features include a flexible collar and earphones magnetically attach to each other to secure a necklace type wear when not in use. Free Beats app download for Android devices adds additional features and software updates. Has music player transport, call connect/disconnect, digital voice assistant activation, and Bluetooth volume controls on in-line remote. Has auto-pause feature that will pause audio when earphones are taken out and magnetically connected to each other and will auto-play and auto-answer a call when earphones are separated and placed back in ears. These features can be enabled or disabled in settings using iOS or with Free Beats app download for Android devices as well as update firmware. Has Audio Sharing that lets you wirelessly share audio with another compatible pair of Beats headphones or Apple AirPods. Has quick charge feature: 10 min of charging will provide 1.5 hr. of playtime. Bluetooth connected Apple mobile devices using iOS Version 5 and above will show the battery level. This model comes with Four pairs of ear pieces in various sizes, USB-C charging cable, Quick Start Guide, Warranty Card.
Sound quality:We found the Beats Flex delivers sound quality that falls in the very good range - it reproduces music and voice very well although it does have some noticeable sonic quirks. bass (as in bass drums, bass guitars, stand-up bass, etc.) has good impact and goes fairly deep, but is somewhat prominent and boomy. The midrange (voices, guitars, horns, etc.) is fairly even, but is somewhat hazy, a bit grainy and congested, and depending on the program material, can be somewhat overwhelmed by the bass. The treble (cymbals, the upper range of violins, etc.) is fairly extended but is a bit smeared. The sound also has a good sense of liveliness and is somewhat open--sound-wise it almost seems like you don't have anything plugging up your ears and does a decent job of recovering room ambience. Warmish character. The overall sound can be summarized as bassy and somewhat hazy.
Comfort and Fit:As typical of in-ear models they produce a sense of pressure in the ear canal opening that might be uncomfortable for some.
Small
Fits and stays in place with no problem for casual use for users with small sized ear canals, but may shake loose during vigorous head movements.
Medium
Fits and stays in place with no problem for casual use for users with medium sized ear canals, but may shake loose during vigorous head movements.
Large
Fits and stays in place with no problem for casual use for users with large sized ear canals, but may shake loose during vigorous head movements.
The Collar is not generally noticeable and is very convenient unless it interferes with clothing.
When earphones are not in the ears they dangle from the collar, clip together magnetically, and rest on the chest; while this is very convenient, the earphones will swing out away from the body when leaning over; this can be bothersome or expose them to damage.
The sound of the earphone connecting cable rubbing on clothing may be heard through the earphones by some users depending on the clothing it's rubbing on.
