Features: Experience from the summer heat with our evaporative air coolers, utilizing revolutionary technology to transform hot air into refreshing mists for your personal comfort. This portable coolers features 3 cooling modes, a built-in humidifier, and a lightweight design, making it enough for bedrooms, home offices, or camping trips. Perfect for students and remote workers, this small air conditioner keeps you cool and focused while studying or working, enhancing productivity during the hottest days. Ideal for various setting like your bedroom, living room, or even outdoor adventures, this USB-rechargeable air coolers ensures you enjoy a comfortable atmosphere wherever you go. With a powerful 550ml water reservoirs and quiet operation, this portable air conditioning unit brings sustainable cooling solution that help create a serenes environment for sleeping, working, or relaxing. Specifications: Component: Plastic Voltage: 5V Power: 18W Battery Capacity: 2000mAh Water Tank Capacity: 550ML Floor Area: 10 Square Feet Number of Speeds: 3 Size: Approx. 5.71x6.5x7.28inch(14.5x16.5x18.5cm) Package Includes: 1x Air Cooling Machine note: Please allow 1-2cm errors due to manual measurement. Due to the differences between different monitors, the picture may not reflect the actual color from the item.