Mantext electronic calendar manual

Press the SET key for three seconds first, then press it when the OF appears, and the date adjustment will appear. Press LIP to increase, press DOWN to decrease, then press SET to adjust the month, then adjust the date, and press MODE to confirm.

Press the MODE key to enter the alarm state, and press the SET key for three seconds to enter the adjustment. The method is as above. After the adjustment is completed, press the down key to enter the alarm state, press the lip to change the alarm, and select the ringtone as pure tone. These are the results of my own debugging. I haven't seen the instruction manual, and I can't find it online.