Product detailsRUN SAFE IN ANY ENVIRONMENT:?These bone conduction headphones are designed with an innovative acoustic system which leave your ear canals completely open, so you can stay aware of your surroundings during outdoor workout sessions. They also come with a high visibility LEDSECURE FIT AS YOU MOVE: The lightweight titanium neckband is flexible and durable. And they rest directly on your cheekbones, so will stay put no matter how you move.WATERPROOF AND DUSTPROOF: is ready to explore the world with you, and join you in the shower afterwards. Hit the beach, or the gym. Don’t let rain and sweat spoil your fun.ALWAYS READY TO GO: You get up to 9 hours playtime from a single charge, and a quick 15-minute boost will give you another hour.LONG-WEARING COMFORT: Traditional over-ear headphones and earbuds may leave your ears feeling sore after a few hours, especially if you have sensitive ear canals. These bone conduction headphones certainly won?t. They also fit snugly around your ears, no matter the size and shape of your head.NEVER MISS A BEAT OR CALL: Button controls let you skip tracks, take calls, wake your smartphone?s voice assistant, and more. The 2 built-in mics promise clear calls while exercising outdoors.INCLUDED ACCESSORIES: USB? cable, soft pouch, quick start guide