About Product:1. When charging, digital tube numbers are always on from the bottom to the top, and the charging sign is always on, and the fully charged number shows "100" and the charging sign is always on; 2. When starting up, digital tube shows the digital power and the English is always on; when the power is insufficient, digital tube shows the digital power, English and charging signs flashing; 3. Plug-and-play function, showing the Digital Power, English and charging signs always on; 4, with low voltage protection (3v shutdown), blocking protection function; 5. Lock machine function, long press the Switch 3s, display 3, 2, 1 lock machine, press the switch again, lock flashes three times off; press 3s again to display 3, 2, and 1 boot; 6