feature: 1. Run quietly. It doesn't interfere while you sleep. 2. Large capacity, anti-drying, penetrating and moisturizing. 3. Automatic power-off protection to prevent dry burning. 4. Small size, light and compact, easy to carry. Specification: Color: white, pink, green Name: Humidifier Working voltage: DC 5V Material: silicone/PP/ABS/electronic components Spray volume: 40ml/h Working current: 400mA Water tank capacity: 220ml Use time: 5-10h Power supply: USB Applicable area: 10-20 square meters Noise: less than 36dB Package Included: 1 * Humidifier 1 * USB cable notes: 1. The humidifier can add aromatherapy essential oil, but it is recommended to add 1-2 drops, do not add too much, the charging head uses a current filter below 1A with a length of about 80mm. The filter diameter is about 7-8mm. 2. The filter must be completely soaked in water before working. If the mist is significantly reduced, the swabs will need to be replaced.