Take training and fitness to new levels with CycleOps' Joule 3.0. Its combines the ultimate objective training measurement, wattage, together with much of the comparative information you’d find on your favorite desktop software. You'll see your training stress score (TSS), average climbing speed (VAM) and watts per kilogram, possibly the ultimate factor in cycling success. Download a workout from your coach, and let the Joule prompt you to complete the training. Or, customize the dashboard to provide the metrics you need to show whether you're in need of another interval or a nap. With the Joule's feedback and comparison from previous training, every ride can be as targeted and specific as you need it, giving you the knowledge necessary to maximize your progression. Compatible with all ANT+ devices, the Joule takes the guesswork out of training.