I have a Garmin Edge 130 paired with Garmin Chest-Strapped HRM.
Somehow VO2-max data is not available.
On the Edge 130 device, it was mentioned that Power Meter is needed, along with HRM, for VO2-max to be computed.
But why is Garmin watch able to compute VO2-max even though there is no power meter paired to the watch ?