GPS is currently widely used in cars, and many sedans have started to use it. It is especially practical for people who like self-driving tours. However, today Xianxin Network introduces a navigation device designed specifically for bicycles - a bicycle GPS. It can not only track the user's GPS location but also provide data such as speed, distance, time, altitude, ascents, and descents. Moreover, it can even detect temperature and automatically adjust time zones. When connected to a heart rate monitor, it can detect changes in the user's heart rate, and this information can be used to calculate the calories burned during the ride. Its battery is sufficient for 18 hours of use. Its functions are arguably more diverse than those of ordinary car navigation devices. People who enjoy outdoor mountain biking would find it very suitable to equip themselves with one. Adding a heart rate monitor and a speed sensor, the current overseas selling price is $350, which rivals the price of professional bicycles.