Eye rest reminding device

Disclosed is a reminder for eyes to sleep belonging to small household electrical appliances. The little box provides a battery and a button switch, an electrochemical capacitor is connected with the positive pole of the power when the button switch closes and the electrochemical capacitor is disconnected with the positive pole of the power and is connected with a base resistance of a triode when the button switch opens. The collector load of the triode is an adjustable resistance. The collector is connected with input of not gate 1 and not gate 3, the output of not gate 1 and not gate 3 is connected with the input of not gate 2 and not gate 4, the output of not gate 2 and not gate 4 is connected with an ignitor of a music integrated circuit. The music integrated circuit is connected with a buzzer. Press the button when starting reading and writing, when the preset time is over, buzzer plays music to remind eye to rest, if the bottom is off, music is stopped. The value of the adjustable resistance ensures the preset time with a button shaped cell battery of 3V.