General description 500ML Air Humidifier is a quiet ultrasonic humidifier designed for various settings such as bedrooms, offices, and yoga studios. It features two spray modes and an automatic shut-off function for safety. Technical specifications Color: White and Green Material: Silicone, PP, ABS Battery Capacity: 2000mAh Input Voltage: DC5V Noise Level: less than 23dB Usage Choose between double spray and single spray modes by pressing the button. Ensure the filter cotton is completely soaked before use. Fully charge the humidifier before the first use. Do not press the switch when the water tank is empty. When replacing the filter cotton, ensure the spring is not lost. Other information If the inner core is tilted, it can still be used normally.