It has dual ANT+ and Bluetooth connectivity, and has the advantage of supporting up to three Bluetooth connections at once. The Tickr X isn’t notable just for its onboard storage. That’s probably because you can’t swim with it, but you can track cycling in addition to running, where you can track metrics like cadence, vertical oscillation and ground contact time in addition to your heart rate. The Wahoo Tickr X is a versatile heart rate monitor that stores up to 50 hours of data, so you can go weeks without carrying your phone or downloading your data-and despite having more than twice as much memory as the Garmin HRM-Tri, it’s a lot cheaper. Wahoo Tickr X Heart Rate Monitor Chest Strap BUY FROM AMAZON And Garmin estimates you’ll only need to change the battery about once every 10 months.īest Heart Rate Monitor with Memory Wahoo Tickr X Heart Rate Monitor Chest Strap It tracks a lot more than just heart rate, too-a concoction of cadence, vertical oscillation and ground contact time is worth its weight in gold for runners who can interpret the data to eke out better performance. It comes with a generous amount of on-board memory (20 hours) to store all your data while you’re under water or just not wearing your watch, and synchs automatically when back in range. That’s not something every heart rate monitor can claim. But in exchange, you get an accurate, comfortable chest strap monitor that is just as good at tracking your heart rate underwater as above. That’s because this HRM works with ANT+ only-no Bluetooth. It’s a little more expensive than the run-of-the-mill heart rate monitor, but the Garmin HRM-Tri is laser focused on a very specific niche: dedicated triathletes who are already invested in a Garmin wearable like a Garmin Forerunner 945 or Fenix 6. Garmin HRM-Tri Heart Rate Monitor BUY FROM AMAZON