406.6.3 Route Mode Setup:In Route mode (destinations 01~50), holding down the "Select"button for 3 seconds opens the display. The currentdestination (01~50) will also start blinking. For example, ifcurrently set to destination ID 21, the number 21 will flashduring Setup mode. The blinking items include , DTG anddistance reading. By pressing the "Reset/Mark" button (i.e. "Start/Stop"button), the destination will be reset and it’s coordinates marked. The calculated DTGshould be 0.00. Once reset, it will continue blinking.Pressing the "Select" button a second timeBlinking items include: MI or KM, mi/h or km/h. If MI is blinking, then mi/h will be blinking aswell. If KM is blinking, then km/h will be blinking. Pressing the "Reset/Mark" button (i.e."Start/Stop" button) switches between metric or imperial units and they will continue to blink.If the unit of measurement is switched to imperial or metric, other functions' unit ofmeasurement will switch as well.Pressing the "Select" button a third timeReverts to the first blinking item.Under any setup mode, holding down the "Select" button for 3 seconds closes the setupmode and display then reverts back to user mode.