Power Meters

Sigma's Rox 10.0 will take you to the ends of the earth! Sporting GPS, route navigation, and ANT+ technology, the Rox 10.0 gives you all the ride information you crave. Speed, distance, and time functions are just the beginning with this computer. For climbing days you get a host of functions like gradient, altitude, and a profile of the next three miles. The array of lap functions provides the perfect tools for races and intervals. The data log, docking station, and Data Center software make tracking your rides simple and easy. Plus, the speed and cadence sensors and heart rate monitor help you keep track of how hard you're working.

Sigma Sport's Rox 8.1 is one tiny computer that packs a mighty punch! It's stuffed full of all the features you need to take your workouts to the next level, including cadence, speed, current heart rate and target HR zones, as well as temperature, altitude and ascent/descent. If that wasn't enough, the Rox 8.1 also measures current, average and maximum power using an advanced equation that incorporates bike type, rider weight, shoulder width and more. With Sigma's smart 3-channel wireless transmission system, you can view multiple measurements such as speed, cadence and pulse, at the same time without interference. And, forget about having to re-calibrate this versatile computer before every ride—Sigma's Intelligent Altitude Calibration feature does it for you!