... .Function Introduction1.This product is suitable for sports, leisure, office people, can use in travel, shopping, exercise, fitness, cycling, playing, ... , office and so on;2.free to listen to, get rid of troubles of theline, enjoy portable, lightweight, stylish, trend, new, unique, ... and cool wireless neckband, sporty appearance, so that you enjoy joy and comfort of music in sports;4.Very suitable for ...