Now you can measure your power output without replacing any components on your bicycle. PowerTap's PowerCal Bluetooth Smart with Speed/Cadence Sensor gives you real-world and real-time data via a convenient chest strap. It's compact, light, and easy to bring along on every ride and on any bike so you get consistent training metrics. After the initial setup, the PowerCal uses complex scientific algorithms based on your heart rate to send accurate power data to your Bluetooth compatible device (sold separately) so you can maximize every training session. The included speed/cadence sensor attaches to your bike for even more data. And, because the PowerCal is worn by you and not on your bike, you can use it to track progress across multisport training disciplines as well.
The PowerCal is the world’s first-ever power meter calculated from heart rate. At the time of its release, it was an incredible innovation combining two important training metrics: heart rate and power. And after all these years, the PowerCal remains as one of Powertap's most popular products, and for good reason—athletes of all kinds trust it ride after ride. - First-ever power meter calculated from heart rate. - Most affordable way to begin power training. - Bluetooth Smart or ANT+ compatible. - Signal Transmission: Bluetooth Smart (Cycling Power Service, Heart Rate Service, Device Info Service) or ANT+ (2.4 GHz) - Operational Temperature: 0-40C/32-103F - Battery Type: CR2032 - Battery Life: 400 Operational Hours (Bluetooth); 600 Operational Hours (ANT+) - The PowerCal is not a waterproof device and should not be submerged in water - PowerCal BLE is compatible exclusively with the PowerTap mobile application on iPhone 4S or higher. - PowerCal ANT+ is compatible with android and iPhone/iPad devices with use of appropriate ANT+ adapter key - PowerCal ANT+ is not compatible with cervos (little yellow computer) or older grey indoor cycle consoles.
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