I've used mine for 600 miles, and it's been very useful to me. I had a problem in which the HRM seemed to turn itself off for several minutes at a time and then back on. Wahoo service did some reasonable troubleshooting, then sent a warranty replacement without hassle. I'm very grateful to them.
I did a 30-day (well, really 21 days, since the company that supplied the HRM effed up) HRM thing, and the max HR measured by the device my doc arranged for was about the same as the max HR reported by the Tickr Fit at about the same time. I cut the test short because after 21 days with no problems, neither my doc nor I thought any anomalies would show up.
Last edited by philbob57; 07-26-19 at 04:15 PM.