Wearable devices are small in size and easy to carry. They are mainly used with other mobile devices (such as mobile phones, tablets, etc.). Watches can be used to make calls, surf the Internet, and monitor heart rate; Bluetooth headset can be used to filter the surrounding noisy environment noise, so that users can hear the voice of people in or around the phone clearly; Explosion proof glasses can transmit the scene environment to the rear personnel through video, which is convenient for guiding work. At the same time, they can conduct face recognition and quickly identify the personnel in the lens by comparing with the database.