The Polar OH1 Optical Heart Rate Sensor in Black provides versatility, comfort, and simplicity. This sensor is worn on the arm and accurately captures your heart rate while you are working out. The OH1 can store up to 200 hours of training data with its built-in memory. The armband is designed to fit securely and comfortably around your arm. The Polar OH1 boasts a long battery life with up to 12 hours of training time on a single charge and is also waterproof up to 30m.
- Weight Sensor 5 g, armband 12 g
- Height 9.5 mm
- Diameter 29.85 mm
- 4 MB, up to 200 hours of training time
- Rechargeable 45 mAh lithium polymer battery