Calculates the number of steps, calories expended theoretically, the distance traveled. The countdown begins after a few seconds to avoid inadvertent movements (bag that is moved, trips on a chair with wheels, ...). S you walk more than 7 seconds, the first 7 seconds are obviously reflected in the number of steps taken. Easy to configure. Data is stored for 7 days. Only small downside: the "strap" to wear the pedometer around the neck. It is in a faux metal wrapped clear plastic. This "belt" is a little stiff and too showy. The ring that connects the hook to the pedometer is fragile.