In- Description: This product is a negative ion humidifier, which uses a variety of methods to atomize water to maintain a high humidity in the room and generate a certain amount of natural negative o ions to create a moist environment. Specification: Model: SY51 Applicable area: 10 square meters or less Function: negative ion Water tank capacity: less than 1 liter Number of fog outlets: 1 Mode of operation: mechanical Timing function: no timing Water shortage and power protection: support Power mode: USB Applicable object: household Product Name: Donut atomizer, humidifier Material: ABS Shape: round and ring Power input: DC 5V /500mA Power mode: USB Package included: 1 * Sprayer Features: 1. Appearance design: The product adopts a small doughnut appearance design, which is convenient to carry, so that the skin can easily enjoy the water mist at any time even when traveling. 2. Excellent performance: This humidifier adopts high-efficiency water atomization, with good spray effect, and the working state is silent, which will not affect your life and work while you use it. 3. Attention: It is recommended to use a cup with a larger mouth, because if the mouth is small, the tension of the water will make it difficult for water to enter the water inlet of the lower part of the humidifier, which will affect the fogging effect. 4. Instructions for use: First, put the humidifier into the water steadily and make full contact with the water surface. Then connect the USB cable, touch the sensor switch, and spray will start after a few seconds. Notes: 1.Due to the difference between different monitors, the picture may not reflect the actual color of the item. We guarantee the style is the same as shown in the pictures. 2.Due to the manual measurement and different measurement methods, please allow 1-3cm deviation. Thanks!