Knog NERD Wireless Bicycle Computer, 12 Function, Black The main computer unit is designed with a removable main housing that can be rotated to mount to handlebars, frame, or stem The silicon strap makes the installation on a bike super easy and fast (ideal diameter 22 to 40mm) 12 Function computer Current, average, maximum speed and relative speed shown on a graph compared to average speed Multi-bike selection (accumulated speed and distance data for 2 different bikes can be stored) 12/24 hour clock Trip distance, distance per day, and odometer Total ride time Scanning feature will display all functions in a looped sequence