Easy connect and extensive range: Bluetooth 5.0 BLE, enjoy 30 feet of uninterrupted connectivity. 10 hrs of play time: Lithium-ion battery lets you enjoy up to 10 hours of play time, rechargeable with USB power sources. Super bass and HD sound: These neckband bluetooth earphones deliver crisp HD sound, deep bass, clear mids and transparent highs. Magnetic lock: Magnetic lock helps to keep the earphones in place preventing them from falling when not in use. Hands-free: Power on, take calls and control your music with in-line mic and multi-function button. Also convenient opening to charge your earphones. Dual paring: Dual pairing allows to seamlessly connect two devices at the same time for double the entertainment. Always in place: Ergonomic design for a secure fit to keep the earphones comfortably in place during workouts. Comes with small, medium and large buds to match your ear size. Sweat proof: IPX4 rated Bluetooth neckband earphones. Universal compatibility: Compatible with all Bluetooth devices including the iPhone, iPod, iPad, smartphones, tablets, Bluetooth mp3 players. Mivi warranty: We took immense care and used advanced technology to build a worry free product. But just in case you have an issue, this product comes with a one-year limited manufacturer warranty and amazing customer service.