Sleek, lightweight and easy to use, PowerTap's Joule GPS is packed with valuable data to maximize your training. With 35 different field metrics, ANT+ compatibility, and three "dashboard" screens, you can easily keep track of power, elevation gain, distance, heart rate, TSS, cadence — the list goes on. Being able to view six customized metrics plus two sub-fields on each dashboard reduces stress and time spent changing screens. Navigating the dashboards and starting/stopping intervals is easy with a few simple, easy-to-hit rubberized buttons, and because Joule GPS keeps historical records for up to a year, you can compare current rides to past performances, making it an invaluable tool for tracking progress on the go. Plus having GPS focuses your energy on the ride, taking the guesswork out of staying on course when exploring new routes, and allowing you to map all your rides back at home.