Enhance your business effect with Nico Neckband Headphones!The Sport Magnetic Headphones with Mic and build in recharger battery with 700 mAh capacity, battery life up to 60 hours playtime.Compatible 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.Support TF card(price not include TF card).