Performance GPS cycling computer with mapping and touchscreen. Dynamic performance monitoring provides insights on your VO2 max, recovery, training load focus, heat and altitude acclimation, nutrition, hydration and more when paired with compatible sensors. Cycling safety features include new bike alarm, group messaging and tracking, assistance and compatibility with Varia™ rearview radar and lights so you can see and be seen (when device is paired with your compatible smartphone). Includes routable Garmin Cycle Map with popularity routing — which helps you ride like a local — plus on-device route creation, off-course recalculation and back to start; mountain biking model has integrated Trailforks data, including trail difficulty ratings. Customize with free apps, widgets and data fields from the Connect IQ™ Store. MTB dynamics track jump count, jump distance and hang time as well as Grit, a measure of the ride’s difficulty. Silicone protective case included w/ MTB Bundle.