Meet the Polar OH1+ HRM: an optical heart rate sensor that connects to Bluetooth and ANT+ compatible devices to help you monitor your workouts. It combines with your iPhone or Android device for heart rate tracking. It has a built-in memory for up to 200 hours of training.
More gadgets like this ➡️ : here
This kit comes with a swimming goggle clip for convenient use in the pool. It is water resistant up to 30m.
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