Units - Depth; Units - Temp (International Only); Units - Distance; Units - Speed - Humminbird 698ci HD SI Combo Operation Manual

Units - Depth selects the units of measure for all depth-related readouts.
Units - Temp selects the units of measure for all temperature-related readouts.
International Models only.
Units - Distance selects the units of measure for all distance-related readouts.
This menu option is available if a Temp/Speed accessory is connected and the
paddlewheel has moved at least once or if the GPS Receiver is connected.
Units - Speed selects the units of measure for speed-related readouts. This
menu option is available if a Temp/Speed accessory is connected and the
paddlewheel has moved at least once or if the GPS Receiver is connected.
User Mode sets the menu system to Normal or Advanced. When set to Normal,
the basic set of menu options are shown in the menu system. When set to
Advanced, additional menu options are added to the menu system. See Main
Menu: User Mode for details.

Units - Depth

Settings: Domestic Models: Feet, Fathoms; International
Models: Meters, Feet, Fathoms; Default = Feet/Meters
Units - Temp
(International models only)
Settings: Celsius, Fahrenheit; Default = Celsius

Units - Distance

Settings: Domestic Models: Statute Miles, Nautical Miles,
Default = Statute Miles; International Models:
Meters/Kilometers, Meters/Nautical Miles, Feet/Statute
Miles, Feet/Nautical Miles, Default = Meters/Kilometers

Units - Speed

Settings: Domestic Models: mph, kts; International
Models: kph, mph, kts; Default = mph/kph

User Mode

Settings: Normal, Advanced; Default = Normal
161 Setup Menu Tab