Excellent computer with basic easy to use functions. No tools needed to install, includes detailed instructions. Functions include; current speed, total distance, trip distance, and a clock. Programmable to your wheel size. Reads speed in miles or kilometers per hour. It's nice to have a computer when riding! Map out mileage routes, set goals, keep up the pace! Great gift ideas. A must for every bike rider. Battery operated (included) battery life is about 1.5 years. Computer is in stock and ready to ship today via UPS at discounted shipping rates! We can ship 1-day, 2-day, 3-day select, or ground! Happy Riding! Free shipping on orders over $100! Al's one-liner (Adolescence and snow are the only problems that disappear if you ignore them long enough.)