A. 4-in-1 USB Personal Air Cooler: This multifunctional desktop mini air conditioner comes with 4 functions, including cooling fan, purifier, humidifier, and 7-color LED atmosphere light. It is powered by USB, and for the air cooler to work well, a 5.0V-1.5A adapter is recommended. B. 4 Gears and 7 Color Lights: This mobile air conditioner features four-level wind speeds and a 90-degree adjustable wind direction, allowing users to select the most suitable setting for leisure, sleeping, or working time. The built-in colorful soft LED light can create a romantic atmosphere and may help with better sleep. Users can set the air cooling fan to a preferred color, choose among 7 color-cycle modes, or switch it off directly. C. 4 Timer and 2 Modes: The mini desk air cooler is equipped with a four-speed timing function (2-4-6-8 Hours), and offers optional cold wind and natural wind modes. When the water in the cooler runs low, it can automatically switch to natural wind. D. Humidifier & Air Purifier: This personal air conditioner is designed with humidifier and air purifier functions, operated via 4 separate buttons. Users can add clean water for the humidifier function or essential oil for aromatherapy, making it suitable for home, outdoor, and office use. E. Easy Operation & Portable: The mini USB evaporative air cooler is designed to be portable and compact. It can be placed on tables, desks, or in the kitchen, and is suitable for use in homes, offices, bedrooms, baby rooms, during travel, and outdoor activities. It is helpful for improving quality of life and can be considered as a gift option for oneself, family, and friends.