The center of the back of the phone is pre-embedded with a screw cap and then the threaded part of the special screw is locked to expose the special screw head and the unthreaded metal column. There is a piece of unthreaded metal column between the special screw head and the thread.Put the center of the magic tape measure with two overlapping and large holes to create two snap points. The large round hole of the magic tape measure is slightly larger, and the small round hole of the magic tape measure is slightly larger than the unthreaded metal column. The screw head can pass through the large round hole of the magic tape measure. The unthreaded metal column of the special screw can be inserted into the small round hole of the magic tape measure by the click point of the magic tape measure, and the mobile phone can be fixed on the magic tape measure, so the mobile phone follows the magic tape measure. On the curly wrist, the mobile phone can be freely rotated on the wrist by means of a non-threaded metal column.The unthreaded metal column of the mobile phone is stuck in the small round hole of the magic tape measure. Take out the mobile phone as long as the unthreaded metal column of the mobile phone is inserted from the small round hole of the magic tape measure through the magic tape measure to the large round hole of the magic tape measure. The special screw head on the back can pass through the large hole of the magic tape measure, so that the phone can take out the phone out of the magic tape measure.The magic tape measure can be crimped and fixed on the wrist, and the back of the phone is attached to the skin of the wrist. The physiological phenomenon of the human body can be visualized by skin detection, such as pulse, blood pressure, body temperature, body ester, blood ester, heartbeat, blood sugar or walking, etc. Can be added to the physiological detection module, the physiological detection module wire connectionThe measuring component is fixed on the s
