Up to 18 Hours Cooling Time: Built-in 4500mAh high-density battery, enhanced safety, the portable mini fan supports 5-18 hours running time after fully charged (needs 5-6 hours). You can charge it with a USB socket, computer or car charger. Includes USB-C charging cable and lanyard. 3 adjustable speeds: 3 wind speeds can meet your different cooling needs, easy to control with one button. In addition, the Xtreme Life portable fan uses an efficient, powerful and durable brushless motor. COMPACT AND ULTRA-LIGHT: This mighty fan measures just 6" x 2.4" x 1.9". You can easily carry it in your pocket or purse to stay cool anytime, anywhere. Comes with a lanyard for easy portability. Innovative Sleeve Fan: The upgraded portable fan is designed with a front cover and hidden fan blades, which is a combination of aesthetics and safety for the children. Keep you cool instead of getting unbearably hot while on the go. Powerful Turbo Wind: The portable mini fan adopts arc-shaped turbo design and boost technology, which can collect air more efficiently and provide strong wind. Ideal for travel, outdoor sports and even makeup and eyelashes.