These Bluetooth headphones have been specifically developed for serious athletes. They offer cord-free convenience, and the ear clip design means that these headphones won't fall out while you are running. A water resistant design (IPX5) insures dependable operation. A full function microphone/remote with volume control insures the ultimate in convenience. Enjoy 8 hours operation on a single charge. Dimples on soft ear clip for comfortable and stable fit while running. Bluetooth Wireless Technology 8 hours of listening with built-in rechargeable battery. Water resistance: headphone units IPX5, remote unit IPX4. Headphones with magnetic clasp for wearing around neck etc. when not in use. Allows Ambient Sound with Open Type Earpiece. Supports AE Run & Music training app for smartphones. In-line 3-button remote and mic.