This product is easy to mount and set up when following directions. The numbers are large and easy to read while riding your bike. It has all the functions a novice or semi serious rider would need. When we go for a ride we get our riding time, distance, average speed, maximum speed, real time speedometer, has a clock, and maintains an odometer for bike miles. Except for the clock and odometer you may reset everything else for a new ride. This device is easy to use and would recommend it to anyone who enjoys riding a bicycle. It is priced very reasonable. Have had this product for three months with no problems. A must have and a great product.