Model: AD-3100
mp3 function support usb 2.0,capacty with usb1.1. built-in lithium battery support windows98/me/2000/xp. mac osg .x or above ,including those which support usb agreement. support mp3/wma format capacity :65mb-1gb (optional) bit ratio :32kbps-256kpbs earphone output :10mw +10mw@ 16 othm pedometer function larg lcd digital display calorie-burning,body fat analyze step-countive adjustable according to individuals steo ,distance display (the metric& lnch system optionl) max .0-99999999.24hrs.stop-watch function intellectualized step-count,avoid the affect by shake.