Bicycle Speedometer, Mechanical Bike Computer & Cycle Computer Featuring Cycling Stopwatch

This mechanical bicycle speedometer tracks cycling speed and elapsed time through direct mechanical transmission. Designed for routine road or trail riding, it provides continuous monitoring without requiring electronic power sources. 1. Constructed from durable aluminum alloy for long-term structural stability. 2. Features a high-resolution backlit display that remains clearly legible in direct sunlight and low-light environments. 3. Fits 26, 27.5, 28, and 29-inch wheels, with mounting requiring a quick release lever or adequate front wheel clearance. 4. Includes complete hardware and accessories for straightforward do-it-yourself installation. 5. Functions as a standard tracking device for regular bicycling and tricycle riding.