Nasudake U12 bluetooth wireless earbuds is perfect for Sport and Running. It is nano IPX-7 waterproof designed with 100% sweat proof, rain proof but not made to be used under water. View the presentation to get complete information of Nasudake U12 earbuds with customer reviews and feedback. Source: https://www.yamagatech.com/product-page/u12-nano-waterproof-sports-bluetooth-stereo-earphone