User

Parameter	Type	Description
screenName	string	The person's screen name. The screen name may not be available if the account was created by a third party application.
person	Person	The user's personal information.
preference	Preference (readonly)	The user's preference.

Preference

Parameter	Type	Description
distanceUnit	DistanceUnit	The user's default distance unit. This valud can be overridden by the activity's default distance unit.
temperatureUnit	TemperatureUnit	The user's default temperature unit.
weightUnit	WeightUnit	The user's default weight unit.
utcOffset	Number (readonly)	The user's last known UTC offset. The offset can be fractional.