@Shrek3k said in Does the Suunto Vertical need a Cardio strap?:
@Tami999 I am with @Brad_Olwin … OHR works excellent for me with all activities for the last years, be it running, hiking, cycling, Nordic walking, swimming, etc.
But that does not seem to be the case for everyone.
And although it works perfectly for me: I like ZoneSense, and that means using a belt.
Recommendation: try it - and never underestimate how important the right position of the watch and tightness of the watch-strap is.
[image: 1754732357099-1000000384.jpg]
That’s photo I found from march from very light jogging on theeadmill when I started adventure with running and prepare it for more intense. Anyway I think also software put his 5 cents because I think at the beginning 2 years ago my Vertical that I used worked very good during activities like cycling and noticed these drops after some time (could be after update). I also remember I could take off watch without pause activity, see it’s losing contact with my skin, put it on hand again see 40 HR back than after 5 mins of running - Boom! back to 140+ without doing anything . I always got watch on the same spot above wrist bone, with same tight. I tested different straps, spot on hand or just loose/tight strap
Now I running with belt and it keeping 170-180 almost all the time without any drops.