Displays the GPS speed and altitude. One is displyed on the watch face using the largest possible characters depending on the number of digits. The other is in a smaller display below that.
Display Tap : Swaps the displays. You can have either speed or altitude on the large display.
BTN3 : Select the desire display units. Speed can be as per the default locale, kph, knots, mph or m/s. Altitude can be feet or metres.
