Hook up your fitness app, like Polar Beat for example, or your Polar Loop activity tracker with Polar H7 and get live, accurate heart rate while you train.  You can use Polar H7 with a number of Polar products and compatible gym equipment.

A comfortable heart rate sensor strap which you connect via bluetooth to your fitness app or training device. Monitor your real-time, accurate heart rate while you train, review and analyze it during or after workouts. You can use your Polar H7 strap with a number of Polar products as well as other compatible gym equipment.

-Compatible with iPhone 4S and later, and with selected Android devices including Samsung Galaxy S3 and S4 using Android 4.3 or later.