features: 1. Our personal air cooler with fog humidifier is a compact portable air space air conditioner. All you need to do is pour some ice water into the water tank, and then turn on the personal air cooler. After a few seconds, it will cool the hot air around you. The cool wind will accompany you through the hot summer 2. Super easy to use: the operation is very simple. Add water/ice water to the water tank (400ml capacity) of the desktop air cooler, connect the USB cable to the mobile power supply (please fully charge it when running for the first time) or other USB interface device, and then turn it on. Then you can enjoy the cool wind. Perfect for your desk, office, living room, bedroom, etc. 3. Super quiet: When using the air cooler, the noise generated is extremely low and will not interfere with your sleep. With the help of the air cooler, you can sleep more comfortably and no longer worry about the hot summer 4. Convenient to carry: small size, light weight, easy to carry, very convenient for indoor and outdoor use. You can use it in the office, living room, kitchen and bedroom. More things are very suitable for taking with you when driving or camping. 5. If you have any questions, please feel free to contact us Notification: 1. Due to different display and lighting effects, the actual color may be slightly different from the image 2. Please allow 1-3cm deviation due to manual measurement explain: Battery capacity: 2000mAh/4000mAh Water tank capacity: about 400ml Size: 217 * 108 * 135mm Weight: 490g Color: white, blue (optional) Package includes: 1 * Portable air conditioner