VO2 max estimates using Edge 530

I have a heart rate sensor, a cadence and speed sensor, unfortunately I do not have a power meter, is there any way to calculate and display the VO2 max for cycling? I would like to add that I also have a Vivoactive3 watch and there is no problem there, just a heart rate sensor and the VO2 max.

It needs power to generate a VO2Max for cycling. On the Vivoactive, the VO2Max figure is coming from running or walking.

Garmin have improved their Vo2max, I saw or read where garmin calculate your vo2max over a number of days(weekly), I think FTP is doing the same as I noticed that I got a new FTP / Vo2max when I really hadnt gone into those zones.

also check the connectIQ 3rd party apps like apps.garmin.com/.../search

I have the vo2max complex and it also records into the fit file, and I can see it plotted as a graph

make sure this option is on the 530  Select Menu > My Stats > Performance Notifications

I am using this manual www8.garmin.com/.../

www8.garmin.com/.../GUID-6EA21C65-5FA4-4CEE-92D9-52AB3A8E8087.html