Hanging Earphones 5.4 Bluetooth Earless Headphones Bone Air Conduction

《 Waterproof and Sweatproof 》 Open ear buds wireless bluetooth headphones with professional-grade waterproof sweatproof and fully enclosed sound cavity to prevent daily sweat and rain from infiltration.Ergonomic design, comfortable and stable to wear, whether running, jumping or other ourside movements, the bluetooth earbuds headphones not in ear are still worn stably.