Energy Saving and Environmental FriendlyCompared to your expensive air conditioning, this portable air cooler has no compressor and does not use chemical refrigerants. It is designed for personal portable use, blows cold air by water evaporation, which gives you a really refreshing feeling. Instead of circulating hot air like a regular fan. And it's more eco-friendly and safe for you 4 IN 1 Portable Air ConditionerThis personal air conditioner can be used as a fan, mini air conditioner, also humidifier, air purifier. By adding ice and water into the water tank for evaporative cooling, our portable air cooler releases cool moist air and comes with a USB cable, lightweight and portable, for you keep cool and comfortable anywhere 900ML Large Water Tank & Long Working TimeThe portable air conditioner equipped with a large capacity water tank, up to to 1000ml, no need to add water several times, can be used for a few hours of cooling after adding water once, easy to use and low power consumption 3 Wind Speeds & 45 Angle OscillationThis portable air conditioner has three wind speed levels (high, medium, low), 2 spray modes, let you ride through the hot summer. And it has auto swing function, just press the swing control button, then it swings with 45angles, which let you feel the cool air from left to right > 7 LED Light & Gradient ModeThe air cooler has 2 built-in timer options: 2h, 4h, which makes it more convenient for daily use. The multi-color LED night light function offers a unique gradient mode that creates a romantic atmosphere when used at night. Work powerfully at low noise, let you sleep comfortably all night