The Delta’s optical heart-rate sensor calculates how many times your heart beats per minute (bpm).

In heart rate mode, the device will start measuring your heart rate automatically after a few seconds and then continue checking in 15-minute intervals. You can view your heart rate on the device directly.



The device also continuously records your heart rate when you are in exercise mode.

By default, the Delta will also periodically record your heart rate throughout the day. This data is used to calculate your Resting Heart Rate and Vo2 Max ratings in the app.

Your physical characteristics, the fit of the device and the type and intensity of physical activity can affect the heart rate reading.

To check your Resting Heart Rate data in the HeadUp app, head on over to your Dashboard and select the Heart category.

From here, you will be able to select the “Resting Heart Rate” tab to view a detailed breakdown of your daily Resting Heart Rate data. You’ll find charts and facts and advice – because we’re nerdy like that. And also because we want to help you improve and maintain your rating.