Pay in 4 interest-free payments of $17.25 Learn more
Ships within 48 hours · Estimated delivery Sep 5 - Sep 10
Battery type: Lithium-Ion
Size: 700 x 25 or 28
Featuring both our renowned Heat-Tech and Polar Fleece fabrics on the inside
Backsweep 7 deg
COROS Heart Rate Monitor - Grey BackInStock-02-05-2026 Battery type: Lithium-IonOptical heart rate sensors work by using light to measure blood flow in capillaries beneath the skin. The top of your wrist is a convenient place for a watch, but is a challenging location for even the best sensors. Wearing on the arm offers our optical sensor an optimal amount of blood flow to gather heart rate data with accuracy equivalent to that of a traditional chest strap. PRECISE DATA. TOTAL COMFORT. Compatible with any Bluetooth heart rate
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