From the watch face, hold , and select Watch Settings > System > Advanced > Data Recording.

Frequency

Sets how often the watch records activity data. The Smart frequency recording option (default) allows for longer activity recordings. The Every Second recording option provides more detailed activity recordings, but may not record entire activities that last for longer periods of time. It records key points where you change direction, pace, or heart rate. Your activity record is smaller, allowing you to store more activities on the device memory.

Log HRV

Enables the watch to record your heart rate variability during an activity (Heart Rate Variability Status).

Position Enhancement

Enables the watch to record more position details for certain activities, such as running or hiking.