X7 Bone Conduction Earphones, Swimming, Fully Waterproof, New, Unopened

These are bone conduction earphones.
I purchased them on Amazon but have not used them, so I am listing them as new, unused, and unopened.
The selling price on Amazon was 9,280 yen.

Brand: Kemeskin
Model: X7
Bone Conduction Earphones Bluetooth 5.4, IP68 Fully Waterproof for Swimming, Bone Conduction Earphones Bluetooth with Built-in 32GB Memory (Up to 8000 Songs), Fast Charging, Open-Ear Design (Doesn't Block Ears), Lightweight, Built-in Microphone, for Sports/Cycling, Black