Is the new Sigma ROX 12.1 EVO bike computer a genuine ‘big three’ competitor?

The cycling computer market is an increasingly crowded space. One brand you may not have considered is Sigma, but the newly launched Sigma ROX 12.1 EVO is looking to change that, and matches the features offered by many of the best cycling computers.

As its name says, the ROX 12.1 EVO is, an evolution of the Sigma ROX 12 cycling computer we reviewed in 2021. It’s based around a three-inch colour touchscreen, augmented by five case-edge buttons, with a screen layout and font that Sigma says ensures excellent readability. 

There’s colour mapping and route guidance included with turn-by-turn navigation. The device will offer three route options to reach a specified destination, namely the suggested, easiest and shortest. You can also download routes from Strava, Komoot and other apps, or create one in Sigma’s app or on the device itself.

The Sigma ROX 12.1 EVO also provides six sport profiles, including road cycling, gravel, e-biking and indoor cycling, plus you can create up to 20 of your own. You can also import workouts from TrainingPeaks and other training apps.

As well as connectivity with the usual heart rate monitors and power meters, the device also supports rear-view radar, electronic gear shifting and many e-bike systems.