With it's well-chosen and diverse selection of functions, the Sigma(R) BC 1106 DTS Wireless computer is perfect for hardcore cyclists. Aside from all the basic functions, the BC 1106 offers Bike 2 Sensor--the ability to track total distance and total riding time for a second bike. Second-bike function requires a second sensor, sold as an optional accessory; BC 1106 automatically recognizes and adjusts for the second sensor. An integrated storage chip prevents the loss of settings and total values during a battery change; low-battery indicator alerts you to make the change. Total values for time and distance are hidden while you ride, allowing you to focus more easily on functions necessary to the ride. Plus, the digital radio speed sensor works without the need of a wire running between computer and fork--a great look for a lean, mean speed machine.