Welcome to the world of revolutionised earphones with the KDM neckband series, that come with greater control, easy accessibility, enhanced battery life and free from the hassle of pulling off or falling and much more meant to make your life easy on-the-go. Play back time : 8-10 hr Music time : 10 hr Charging time : 2 hr Charging type : Micro usb Transmission distance : 10 m Talk time : 12 hr Adjustable headband : Yes IPX 5 sweat proof and splash proof : Yes Wireless version : 5.1 Noise isolation : Yes Support TF card : Yes Built in mic for hands free calling : Yes