Menu functionsDefault name: change the default prefix of thevoice memo.Recording time: select a maximum recordingtime.World clock (Menu 7.4)Use this menu to set your local time zone and findout what time it is in another part of the world.Setting your local time zone1. From the world map, press [Left] or [Right] toselect the city that corresponds to your hometime zone. As the time line moves, the time anddate of the given zone display.2. Press [OK] to save the time zone.Viewing and setting a foreign time zone1. From the world map, press [Down].2. Press [Left] or [Right] to select the foreign timezone you want to view.Calculator (Menu 7.5)Use this menu to perform basic arithmetic functionssuch as addition, subtraction, multiplication, anddivision.Preforming a calculation1. Enter the first number.Press [ ] to include a decimal point.2. Enter the operation for your calculation bypressing the Navigation keys.3. Enter the second number.4. Press [OK] to view the result.Using calculator optionsPress <Options> to access the following options:• Equal: view the result.• Recent calculation: display the last result youcalculated.• Save to memory: save a value into the