Mixblu Charger Cable Replacement for Fitbit Inspire 3 (2 Pack/3.3Ft) 4.5 out of 5 stars 1,635 1 offer from$5.90 #8 Polar H10 Heart Rate Monitor Chest Strap - ANT + Bluetooth, Waterproof HR Sensor for Men and Women 4.2 out of 5 stars 22,352 ...