Even though most are still in the honeymoon with the new ANC model from Sony there is this for those who go in the other direction for an open design...
" Ambie will release the completely wireless earphone "TW-01" after the end of August as a new model of "earphones that do not block the ears" "ambie sound earcuffs". The price is 15,000 yen (tax included). Advance reservations will be accepted from June 10th today.
"TW-01" (black)
"TW-01" (white)
By wearing it like an ear cuff, ambie develops earphones that allow you to "listen while listening" without blocking your ears. The completely wireless earphones also adopted an ear cuff type design.
The mass is about 4.2g per ear. Bluetooth supports 5.2, codecs support SBC and AAC, and additional support for other codecs is planned. Equipped with a MEMS microphone, it can also be used for online meetings. Continuous playback time is about 6 hours. The main body has IPX5 waterproof performance and can be used for sports.
In addition to the lineup of black and white colors, season colors and limited models will also be released. As the first limited edition color, "Cloud Gray" will be available for pre-order from noon on July 1, 2021. In addition, optional parts that can be changed in color according to the coordination of the day are scheduled to be released in the fall."
Hopefully at the price the other codecs planned will add at least aptX. For those unfamiliar...
https://www.ambiesound.com/