Polar OH1 is a compact and versatile optical heart rate sensor that measures heart rate from your arm or temple. It's a great alternative to chest straps. With Polar OH1, nothing stands between you and your goals.
Polar OH1 is a compact and versatile optical heart rate sensor that measures heart rate from your arm or temple. It's a great alternative to chest straps. With Polar OH1, nothing stands between you and your goals.