Cost: $79.99
Yes, it's another heart monitor. This time, the fitness app creators at Wahoo Fitness have created a chest strap equipped with Bluetooth technology to wirelessly track and send your heart rate information to your iPhone 4S. The company says the Blue HR heart rate strap works simultaneously with popular smartphone fitness applications, including RunKeeper and 321run. The one downside: the device will not work on earlier versions of the iPhone.
