Well, just add water and ice to the water tank, then this portable air cooler has an extra layer of coolness. The evaporative cooling process naturally humidifies dry air surrounding and the oscillation keeps you cool with a comfortable breeze at the whole room. From the customer's feedback, we designed two ways to add water, both on top and bottom, so you don't need to bend over anymore. What's more, we increased two extra ice boxes, 2 small ice boxes for top and 2 big ones fit on the bottom, more convenient for your daily use. 3 Modes & 3 Wind Speeds You are able to easily find an appropriate mode-normal, sleep,natural, or cooling - to your taste, and each mode can be adjusted in low/medium/high speed. Four Ice Boxes The four ice boxes that come with the package is a cooling bonus for your hot summer, add the ice boxes or ice cubes to the water tank, enjoy the cool and humid air like swimming in the chill river. Remote Control Its handy remote provided you with ultimate convenience over your cooler setting. You can lay back, stay comfy and control your fan far from anywhere. With a top-mounted control panel, it makes a snap to get used. Read more Easy to Move Lightweight and thanks to the handle, so it is easy to move it to whatever room needs it most. It does a good job of keeping your bedroom cool and humidified. Quiet Operation To show our great concern about your relief, this cooler proudly presents our whisper-quiet technology for your max comfort. The lower than 45db noise will not interfere with your general activities, even your sleep. Visible Water Tank The 1.3 Gallon large-capacity water tank saves you from the frequent replacement, and the visible water window allows you to view the water level clearly at any time. Read more