# Get SpO2 Data
TIP
This guide assumes that your app has already been authorized and the snippet of code that I will show you can access to a valid FitbitCredentials instance, here called fitbitCredentials, the Fitbit OAuth 2.0 client ID, here called clientID, and the Fitbit client secret, here called clientSecret.
SpO2 data (opens new window) contain details about a user's SpO2 data. In Fitbitter, a datapoint is expressed by the FitbitSpO2Data model.
In particular, an instance of FitbitSpO2Data has the following fields:
  /// The user encoded id.
  String? userID;
  /// The date of monitoring of the data.
  DateTime? dateOfMonitoring;
  /// The average value of the data.
  double? avgValue;
  /// The minimum value of the data.
  double? minValue;
  /// The maximum value of the data.
  double? maxValue;
An example is:
FitbitSpO2Data(userID: 7ML2XV, dateOfMonitoring: 2022-05-08 00:00:00.000, avgValue: 97.2, minValue: 94.4, maxValue: 99.8,)
Information about the user's SpO2 data can be obtained in three steps:
# Step 1: Instanciate a manager
First, you need to instanciate a FitbitSpO2DataManager
    FitbitSpO2DataManager fitbitSpO2DataManager = FitbitSpO2DataManager(
        clientID: '<OAuth 2.0 Client ID>',
        clientSecret: '<Client Secret>',
    );
# Step 2: Create the request url
Then, you have to create a url object, FitbitSpO2APIURL to fetch the SpO2 data as:
    FitbitSpO2APIURL fitbitSpO2APIURL = FitbitSpO2APIURL.day(
                                    date: DateTime.now(),
                                    fitbitCredentials: fitbitCredentials,
                                  );
where date is the day you want to fetch FitbitSpO2Data from and fitbitCredentials is the FitbitCredentials instance obtained during the authentication step.
TIP
For the complete list of possible FitbitSpO2APIURL, defined for different time ranges, please refer to the API Doc (opens new window).
# Step 3: Get the data
Finally you can obtain the SpO2 data using
    List<FitbitSpO2Data> fitbitSpO2Data = await fitbitSpO2DataManager.fetch(fitbitSpO2APIURL);