Cane to say the same.
I have a Garmin "smart" watch (with every app notification etc disabled) and I love the fact that I can do almost two weeks of exercises (ride, walk, gym) without needing to charge it. The bike computers are also solid. But sadly the UX of the software on these leaves a bunch to be desired, and I've been bitten by many software and firmware bugs in the last years... Including months for which HRM would randomly and persistently drop it's value from say whatever the real value (say 145 for argument sake) to 80.
That’s just most heart rate monitors. Often it isn’t enough conductivity (add water before activity) or the battery is low
> Including months for which HRM would randomly and persistently drop it's value from say whatever the real value (say 145 for argument sake) to 80.
It’s annoying but a proper HR strap fixes all the issues associated with wrist based optical readers.