Stochastic Dynamic Algorithm - Unique random algorithm program, dynamic adjustment of DC motor speed, reduction of wind sensitivity and fickleness. Cool and Quiet - DC brushless motor with 7 feather leaves, cutting air carefully and extremely quiet at the same time, the minimum gear can hardly hear the sound, as quiet and cool as in the forest. Lightweight and Wireless - Equipped with a Lithium Ion Battery Pack which allows it to be used up to 10 hours. Easily relocate the fan to the place where it is needed beacause of its 4.36kg lightweight body. Intelligent Product - the device can be linked with Mijia APP and control it via Voice Command. The feature that gives the ultimate title to portable and smart products. High Quality and DUrable - The product is made of High Quality Aluminum Alloy and Vehicle Grade Weatherability ABS Material which is resistant to aging and does not easily change color. Plus corrosion Resistant Galvanized Steel Plate Counterweight High Strength Honeycomb Structure.