Garmin HRM-FIT Review Garmin HRM-FIT is by far the most expensive heart rate monitor I've reviewed from Garmin. It has every advanced feature of the Garmin HRM-PRO PLUS plus a novel clip-on mechanism. The only reason to even think of buying one is if you've tried and rejected wrist heart rate from your watch, an optical HR strap for your upper arm, and a traditional chest strap. You'll need to be sure that HRM-FIT will attach to your kinds of sports bras and if you want the advanced workout caching features then you must always use a relatively modern Garmin sports watch. Worse still, you will not be able to use the HRM-FIT like a normal chest strap, for example underneath a wetsuit/swimsuit...it will only attach to a sports bra of the right type (medium/high support). Buy: UK - GBP140 EU - 160€ USD - $150 [wp-review id="87313"] Garmin HRM-FIT: Incompatible Bra Types [gallery size="medium" columns="5" ids="87318,87317,87320,87321,87322"] Garmin HRM-FIT Accuracy Garmin has used its normally accurate HRM tech. However, accuracy will be impacted if you have a loose-fitting bra and the HRM moves. Furthermore, the HRM-FIT has 2 contact pads on its reverse side which can also very slightly reduce accuracy compared to the Polar H10, accuracy will also take a hit if either pad dries out. Garmin HRM-FIT Price & Availability It is listed on Amazon and Garmin sites. Get it from Amazon in case you need to return it ;-) UK - GBP140 EU - 160€ USD - $150 Garmin HRM-FIT Take Out This is fundamentally a reasonably well-conceived product by Garmin. Sure it might have attached more easily and it might have been better if Garmin made it link directly to Garmin Connect to start & save workouts. The main problem will be the one you encounter 3 or 4 weeks after buying this very expensive product. That problem will be that it won't work for all the activities you take part in, you'll probably have different sports bras (or equivalent) for different activities and some of them will be incompatible. You'll just be annoyed and perhaps slightly resentful of the cost. You might choose to plod on using it and get inaccurate data caused by loose fitting. That'll eventually annoy you as well. Personally, I would much rather have seen Garmin make a Whoop competitor for the upper arm...but it didn't. Personally, I would have liked to have seen Garmin include a strap extender to convert HRM-FIT to a regular chest strap and make it more useful when swimming...but it didn't.