Jiaming 830 can't add an extra bike. Turn on the phone and set up Bluetooth, select the paired device, and then click Add Connection. Jiaming 830 is an intelligent code watch, and its functions include professional training index display, navigation, 3-star positioning system, safe riding instructions, electricity statistics and so on. At first, the product was integrated with cabin navigation equipment, and later, GPS technology was gradually extended to wearable products, resulting in aviation, navigation and car navigation, outdoor and fitness markets. With the shrinking of volume and the updating of functions, various types of GPS applications such as mountaineering, swimming and running have been expanded.