Here is our high quality YS-468C 15 Bicycle Computer with Luminous Function Black we highly recommend to you. It is functioned as tracking your training progress in real time. Therefore, you can clearly see and know how long you have ride. With a long-lasting battery, you can ride bicycle over long distance without changing the battery. What is more, featured with easy operation and durability, it is popular among riders. So what are you waiting for? Come to take it home at once!