SHOKZ
Shokz OpenSwim (Aftershokz Xtrainerz) Swimming MP3 - Bone Conduction MP3 Waterproof Headphones for Swimming - Open-Ear Wireless Headphones, No Bluetooth, with Nose Clip and Earplug (Black)
H2O Audio
H2O Audio Stream 3 PRO and Surge S+ Earbuds - Underwater Streaming Music Waterproof MP3 Player for Swimming with Bluetooth and Short Cord Underwater Headphones with Superior Sound Quality - Blue
BNARQP
BNARQP Bone Conduction Headphones, Swimming Headphones, Open Ear Sport Headphones Wireless Bluetooth 5.4 built-in MP3 Player 32G, IPX8 Waterproof Headphones for Swimming, Running, Cycling
Underwater Audio
Swimbuds 100% Waterproof Headphones Designed for Flip Turns!