{"product_id":"heart-rate-monitor-grey-black-grey","title":"Heart Rate Monitor Arm Band","description":"\u003cp\u003eThe COROS Heart Rate Monitor delivers \u003cstrong\u003e38+ hours\u003c\/strong\u003e of continuous heart rate tracking with chest-strap accuracy — worn on the upper arm where optical sensors get optimal blood flow for reliable, distraction-free data.\u003c\/p\u003e\u003cp\u003eCompatible with any \u003cstrong\u003eBluetooth-enabled\u003c\/strong\u003e heart rate device, it pairs seamlessly with your existing training setup.\u003c\/p\u003e","brand":"COROS","offers":[{"title":"Default Title","offer_id":53420018958699,"sku":"HRM-GRY","price":79.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0969\/3046\/4107\/files\/ProductImageMillCityRunning-2026-08-06T163936.671.png?v=1786052576","url":"https:\/\/www.millcityrunning.com\/products\/heart-rate-monitor-grey-black-grey","provider":"Mill City Running","version":"1.0","type":"link"}