Cycle computer with 4-line MacroMonitor LCD displays up to 5 pieces of data at a glance including: current speed, speed comparator, ride time, trip distance, dual odometer (for 2 wheel sizes), average speed, maximum speed, clock, and temperature. Digital wireless technology eliminates messy wires. Fits 25.0-31.8mm handlebars. Magnet fits up to 4mm bladed spokes. For use with front wheel only. Weight: 3.1 oz. with bracket and sensor.