Strong wind force: the first new copper brushless motor is built in, which is more powerful than ordinary motor and has longer service life. It can support the blade to run at high speed and generate strong wind force. The front cover is a fluid mechanical design that maximizes air flow during hot summer months. A desk fan will be your best friend. Compact size and exquisite design: The 4-inch portable fan is compact and uniquely designed with a modern look, light weight and space saving. Perfect for personal fans for office, home, bedroom, desk, camping or wherever you need to keep your day cool.Adjustable speed: The 3-speed adjustable speed portable fan is enough to meet your various cooling needs. Just press the power button to change the speed. It always stays cool at low speed and is enough to let you cool down quickly after sweating at high speed.Battery-powered and USB-powered: Offers USB cable that is compatible with all USB ports, such as computers, power banks, wall chargers and any other USB power supply, and you just need to plug it in to work day or night. Sturdy base: Engineered rubber at the bottom of the base helps reduce vibration and increase friction, keeping the fan firmly in place and ensuring air flow to where it is needed without slipping even at high speeds. You can simply plug it in and it will work day or night. Sturdy base: Engineered rubber at the bottom of the base helps reduce vibration and increase friction, keeping the fan firmly in place and ensuring air flow to where it is needed without slipping even at high speeds. You can simply plug it in and it will work day or night. Sturdy base: Engineered rubber at the bottom of the base helps reduce vibration and increase friction, keeping the fan firmly in place and ensuring air flow to where it is needed without slipping even at high speeds.