1. Remove the USB plug.
2. Plug in the removable charger.
3. Turn on the removable charger.
4. Press the breast temperature control switch for two seconds.
5. Flashing red light, means automatic heating.
6. After the red light flashes for 5 minutes, then the automatic turn to white light, means the average temperature.
7. Manual adjustment has three levels, red light means continuous high temperature heating.
White light means continuous medium heating, blue light means continuous low heating.
8. Press the breast temperature control switch for two seconds, turns on and stops heating.