Mini Portable Small Fan Quiet Rechargeable Office Desktop Fan Features: Button function: first turn on the power switchs on the back. Second, adjust the appropriate fan speed by repeatedly touching the front power button (low speed > medium speed > high speed). Finally, turn off the power switchs on the back after use. The fan is very small and easy to carry. Perfect for use at home, office, desk. 3-speed ultra-quiet design: low/medium/high speed level​​​​. The three-speed design allows you to have more choices in different temperature environments. With a silent construction, this USB desktop fan is designed to be ultra-quiet while providing high airflow. It is best to work or sleep with you without disturbing you. Built-in 1200mAh large capacity battery (3 hours full charge), rechargeable via USB cable, compatible with computers, laptops, wall chargers and any other USB-enabled power sources. Product Description: Product manual Power: 1.3W Product size: 203*95*46mm Battery capacity: 1200mAh Charging method: usb power interface Wind speed adjustment: three gears Package Including 1 x fan Mini Portable Small Fan Quiet Rechargeable Office Desktop Fan Professional design, comfortable, durable You can use it longer,High cost performance This is a good gift for your friends, family and classmates.It's a good choice 【GOOD SERVICE】We make sure each item is of high quality.No reason to return or exchange goods within 30 days.If any questions, please be free to let us know, you will get our reply within 1018 hours.