Pick up the Tacx Bluetooth Heart Rate Monitor when you're finally serious about bringing your training regimen to the next level. Upgraded over traditional heart rate monitors, this particular unit features Dual Technology, which broadcasts signals over ANT+ and Bluetooth simultaneously, so you can view your exercise stats on sports watches, head units, and smartphones at the same time. It's compatible with any ANT+ device, as well as Bluetooth Smart and Bluetooth 4. 0-enabled devices. The heart rate monitor attaches with a stretchy chest strap, giving you a secure fit and accurate heart rate measurement. This water-resistant unit withstands sweaty training sessions and communicates wirelessly with devices up to 10 meters away. Offering plenty of versatility, it works great with sports watches, cycling head units, smartphones, tablets, and other devices used by cyclists for training purposes and post-workout analysis.