The Ventura IV Bike Computer offers an easy and economical way to track your bike ride stats. Featuring 14 helpful functions, the 4-line digital display includes speed, maximum speed, average speed, total distance, trip distance, scan, stop watch, clock, auto start/stop, km/mi selection, calorie consumption, wheel diameter adjustment, and round frequency per minute functions. The water resistant design is helpful in unpredictable weather. The Ventura IV includes a battery for use right out of the box!