With the angle gel design, this headphone is soft and comfortable to wear in your ears. ^^ With the angle gel design, this headphone is soft and comfortable to wear in your ears. ^^ Owing to its features of small and lightweight maximize the portability of the headphones, it is easy to carry to everywhere. ^^ IPX8, the maximum depth of launching is 1.5 -3 meters/ 4.9 - 9.8 ft. ^^ The headphones is designed for long period use in water, designed for sports like swimming, running, fitness, exercise and the like.