Odear&reg; Portable Mini Cool Fan Desktop Outdoor Mechanical Fan with 4-inch Vanes 3 Speeds Powered Household Summer Cooler Cooling Operated Personal Fans with Rechargeable Battery and Usb(white) The mini fans is unique and fashionable. Using 4.5 W brushless motor industrial fan, make sure the high winds and long-life. With intelligent control system, reliable performance ,the fans are fully functional and easy operation Dual power source, plug in with the USB adapter or use with the battery, LED lighting 3 gear speeds to meet your need,so convenient!Working time: Charging time about 4 hours. Blowing time: 1 speed: about 8 hours, 2 speed: about 4 hours, 3 speed: about 2 hours Mini 4 inch design, easy to carry, just throw into your bag or use the carabiner and lanyard to han,Indoor use when need instant cooling need for kitchen and bedroom, saving power when air condition is not so necessary. Especially perfect for outdoor activities and travel. It's also a good fan to care your baby 100% pure copper brushless motor makes F95B fan working 10000 Hours lifetime, 3150RPM/min (other USB fan is below 2000RPM/min), high energy conservation Package includes: 1 x Mini USB Fan, 1 x 18650 Rechargeable Batteries, 1 x USB Adapter