Barbe Neckband Headphones with Mic and build in recharger battery with 60 mAh capacity, battery life up to 3 hours playtime. Copatible with Android and iOS device! With an ergonomic in-ear design make it perfect for sport, and the built-in magnet gives this around the neck bluetooth headphones a convenient storage way to carry around when your earbuds not in use. Suitable for gym, working out and running.