Advanced Refrigeration Technology: Unlike other portable air conditioners, our portable air conditioner uses ultrasonic atomization technology to atomize water molecules in the tank into ultrafine particles, and then blows out cool and moist air through the fan. In addition, two spray modes are available, helping to increase humidity and eliminate symptoms such as dry skin, nasal congestion, and coughing caused by dry air in summer. USB Rechargeable Quiet Air Cooler: Hand strap for easy carrying. Built-in 1800mAh rechargeable battery, providing up to 8 hours of battery life after a full charge, rechargeable via any USB Type-C device. Take your mini portable air cooler with you and bravely face the heat. 2 Fan Speeds & 2 Sprays: This portable air conditioner has 2 fan speeds and 2 sprays to meet different needs. The maximum wind speed can reach 2.8m/s and the maximum spray volume can reach 8ml/min. With its strong wind force, this portable air conditioner can cool a larger space than other mini air conditioners. Whether you want to enjoy natural comfort or quickly relieve the heat, this portable air conditioner will meet your needs with its excellent performance. 500ml Large Capacity Water Tank & Upgraded FilterThe 500ml large leak-proof top water tank is easy to fill and clean, allowing the air conditioner to work continuously for 6-8 hours. Adding ice cubes to the water tank can refresh the wind. Adding essential oils can soothe fatigue and create a comfortable and fragrant space. NoteSince no refrigerants or chemicals are used to cool the air, you should not expect to achieve the same effect as an air conditioner.