Using wireless connection technology to connect wearable devices with smart phones will be the key to develop the application potential of these devices. For example, through Near Field Communication (NFC) technology, consumers can easily connect wearable devices to smart phones without other complicated menus or cumbersome setup processes. With the help of Bluetooth intelligence and WiFi technology, consumers can obtain data (such as calories burned, heart rate, etc. ) and transmit data to smartphones or the cloud without consuming too much power; With the help of WiFi direct connection technology, consumers can directly connect two WiFi devices without access points or computers. Combining wearable devices with location technology can realize some interesting new application functions.