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 AONIC Free True Wireless has a volume control plus an integrated microphone and player function controls. Additional features include - Either earpiece can be used alone for one ear monitoring of Bluetooth streamed audio and telephone communications. Charging/carrying case has built-in rechargeable battery that the manufacturer claims can be used to recharge the earphone batteries for an additional 14 hrs. of listening time for a total of 21 hrs. Manufacturer claims water resistance of (IPX4). Free ShurePlus Play app download for Apple and Android mobile devices adds additional features. Has volume up/down, music player play/pause, call connect/disconnect, ambient sound mode, power on/off, and digital voice assistant activation. Has power on/off, Bluetooth pairing, and battery level voice announcements. Supports compatible digital voice assistants when used with Bluetooth devices that have those features. Bluetooth connected Apple mobile devices using iOS Version 5 and above will show the battery level. The ShurePlus Play app download for Apple or Android mobile devices can be used to change the sound via preset or custom EQ settings (EQ is only applied to sound played from within the ShurePlus Play app), adjust ambient sound monitoring levels, customize earbud button control, show the battery level, act as a music player, and update the earphone's firmware. This model comes with Portable Bluetooth wireless isolating ear-insert earphones that come with 3 pairs of ear pieces in various sizes, USB-C connector charging cable, charging cradle/recharger battery/carrying case, Warranty Booklet, Quick Start Guide.
Sound quality: We found the AONIC Free True Wireless 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. With the ShurePlus Play app set with EQ off (the as received state of the headphone) the bass (as in bass drums, bass guitars, stand-up bass, etc.) has good impact and goes deep. The midrange (voices, guitars, horns, etc.) is even, but is somewhat hazy and grainy, and a bit congested. The treble (cymbals, the upper range of violins, etc.) is fairly extended but is uneven - the lower treble is a bit prominent while the mid-treble is a bit subdued and smeared. The sound also has a good sense of liveliness and does a decent job of recovering room ambience. Neutral character. The overall sound can be summarized as even, but somewhat hazy. The EQ settings of the app have a noticeable effect on the sound of these earphones.
Comfort: As typical of in-ear models they produce a sense of pressure in the ear canal opening might be uncomfortable for some. Users with small earbowls might find that the earphone body feels a bit bulky in their earbowl and that they stick out too far and feel like they may lever out of place and are mostly held in place by the section of the earphone that is inserted in the ear canal, but that they will stay in place during casual use and that they are stable even during fairly vigorous head movement. Users with medium and larger sized ear bowls will probably find that this model stays in place with no problems for casual use and that they are stable even during fairly vigorous head movement.
