I have a non-Garmin heart rate strap that works great, although the HRM-Pro integrates perfectly with my Garmin 945 so the purchase made sense for me . The additional metrics on my running data that the strap provides are also helpful. UPDATE, just recently this failed. I registered it with Garmin and replacing it was as easy as emailing Garmin. Garmin shipped my new monitor and shipping the old one to Garmin was free. The 5 star rating for the product remains unchanged and Garmin has provided me with fantastic customer service. If I have another crash my rating will change. LAST UPDATE, Garmin's replacement failed almost exactly like the original. Very disappointing. Started with erratic and/or high heart rates, then had trouble recognizing my Garmin 945 and the Garmin app on my Android phone. Maybe I am, although I have no idea how it will be. I have had an inexpensive but very reliable heart rate monitor/belt for over 2 years at a bargain price and I am using it again. 11pm at Revain By the way. I ended up with built in Garmin straps/monitors.
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