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My Garmin 945 monitor is rly annoying me as its inaccurate which for a £500 watch is pretty disappointing
The problem is that skin based HR requires a really tight connection to work really well. The Polar OH1+ on a bicep gets a much better connection than anything (Polar OH1+ or a Garmin 945, anything) can make at the wrist as the bicep is
like rocksquishy. The bones in the wrist make it hard to keep a sensor pressed against the skin tightly. -
I've been weighing up an upgrade on my watch to something like a 245 music (or maybe 745/945/Fenix if I'm feeling plush), currently using a very old/basic Forerunner 25 with my Wahoo HR strap.
Heard wrist-based monitoring generally sucks but I guess if it is consistently in-consistent that would be alright. Like the idea of music from my watch without taking a phone but then also quite enjoy the 'quiet time' you can get from running without. Maps would be useful too, but that's only available on the super expensive options
¯_(ツ)_/¯
For slow running I find that wearing my HRM and strictly telling myself before and during that I need to stay under 140bpm really helps. For faster sessions I disregard HR and just look at pace, but for all other runs the HRM is invaluable at keeping me in check (it's amazing what you 'think' is easy pace versus what is actually easy!)