COROS Heart Rate Monitor - Grey BackInStock-02-05-2026 Featuring both our renowned Heat-Tech

Featuring both our renowned Heat-Tech and Polar Fleece fabrics on the inside

no-sew sleeve hem finishing

Battery type: Lithium-Ion

5mm thick tyre repair plugs

Size: 700 x 25 or 28

COROS Heart Rate Monitor - Grey BackInStock-02-05-2026 Featuring both our renowned Heat-TechOptical 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