The advantages of H500 double-layer continuous tuyere of Mijia water ion blower are as follows: 1, magnetic attraction is more convenient and labor-saving than snap tuyere, and 360 free rotation is smoother; 2. Combined with the circular air outlet of the runway, the high-speed airflow beam is output to meet the requirements of quick hair drying and local styling; 3, double-layer structure design, to prevent the tuyere surface temperature is too high, effective heat insulation, away from burns.