1.Mini neckband sports mp3 2.Product weight: 35g 3.Material: ABS ... for sports, leisure, office people, can use in travel, shopping, exercise, fitness, cycling, playing, dancing, entertainment, office and so on; ... comfortable and easy in the long time too.Product parameters Mini neck set sports mp3 Color: Black/White/Red/Green/ ... .5 hoursPower: 5 hoursStorage Temperature: -20 ° C-80 ° C; Mini Sport mp3