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.