Coospo H6 opinion?

I am mainly interested in performing the lactate threshold test with my Garmin Fenix 7, would this band be ok?

I am opting for this band since I am restarting running now and I am quite reluctant to spend 100€ in a band.. does anyone have it and can provide me any opinion? (I would buy it on amazon for 25€

I am mainly interested in performing the lactate threshold test with my Garmin Fenix 7, would this band be ok?

I am opting for this band since I am restarting running now and I am quite reluctant to spend 100€ in a band.. does anyone have it and can provide me any opinion? (I would buy it on amazon for 25€