Used a few times. Disinfected, though done by an amateur. These are waterproof bone conduction earphones with a 360° flexible design and HD sound quality. Because they are bone conduction, you can still hear conversations while listening to music, which is convenient for those who have difficulty hearing. Headphones are more hygienic than in-ear earphones because they prevent mold from growing inside the ear. - Model: F808 - Bluetooth Version: V5.2 + EDR - Waterproof: Yes - Sound Quality: HD SOUND - Design: 360° flexible - Includes a USB charging cable