There's no doubt that an ECG (electrocardiography) chest strap heart rate sensor provides superior accuracy, especially for HIIT and RST (repeated sprint training). However, for steady-state zone-2 training, an arm-strap sensor is sufficient and more comfortable for extended sessions—particularly in cold weather with low humidity when getting the chest strap under multiple layers and applying conductive gel can be challenging.
Specific to this product, it's comfortable, easy to adjust, and pairs effortlessly with several apps and devices, including my Garmin ForeTrek hiking GPS. It also offers good battery life and a reliable charging mechanism. While this doesn't replace my chest-strap sensor (due to the differences between electrical signals and optical sensing) for sprints, lactate threshold training, or mountain biking on rough terrain—where rapid heart rate changes and physical jarring significantly affect accuracy—it has made heart rate monitoring for steady-state training and hiking much easier and more convenient.
Sigtau150 –
SassyRose –
Magda chavez –
SkyIsland Backcountry –
Miruna Stanica –
Steven Higgins –
mike –
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Amazon Customer –