【10000 BATTERY & USB CABLE】 The rechargeable fan can be powered by USB cable or battery(both included). The built-in 10000 battery can last for 24-36 hours (depend on its speed) and is fully charged within 12 hours. It can also be charged via the computer, laptop, power bank, car adapter. You can charge while using it.
【4 POWERFUL WIND & SUPER QUIET】 The battery-operated fan comes with 4 speeds for different purposes, powerful wind yet whispers working. The 3-speed setting and 1 energy-saving setting give you exactly the wind you want. The fourth speed is the usb fan goes from 1-2-3 speed circularly. You can adjust wind speed by pressing the power button repeatedly. Moreover, running lower than 40db, this clip fan won't disturb your work and sound sleep.
