About this product 【Ultra-quiet and comfortable sleep】This portable air conditioner features an upgraded system that works efficiently at Low noise, there are 3 wind speeds to choose from, you can adjust it freely according to your needs, the air conditioner allows you to spend the night comfortably with the appropriate temperature and low noise. 4000mAh Battery Life: This portable air conditioner has a built-in 4000mAh rechargeable battery for long battery life. Cordless, it is easy to carry anywhere. This air conditioner is ideal for your bedroom, kitchen, study, dorm, car, office, etc. Energy Saving: This mini air conditioner uses little energy, which is much more economical than a Freon air conditioner in summer. Economical and space-saving, it is a must-have for hot summers. Personal Air Cooler & Humidifier: This air cooler is also a humidifier. Refreshes and humidifies the air for better air quality, moisturizes the skin and humidifies the air. Avoid dry air and enjoy the cool