Amazon.com: TUDIA EVA Empty Case for Heart Rate Monitor with Chest Strap Compatible with Polar H10 [Case ONLY, Device NOT Included] : Sports & Outdoors
Amazon.com : Polar H10 Heart Rate Monitor Chest Strap - ANT + Bluetooth, Waterproof HR Sensor for Men and Women (NEW), Black, XS-S: 20-26 inches (Renewed) : Sports & Outdoors