This practical portable mini fan features compact overall size of 6.3x1.97x2.24 inches and light weight of only 0.27 lbs, easy to store in bags and carry around for summer travel, outdoor sports, shopping and daily outings. Equipped with high performance motor supporting multi-speed rotation up to 8500RPM, it offers three adjustable wind speeds for flexible switching, delivering strong cooling wind to bring fast heat relief in hot weather. Made of durable ABS and PP material, this fan is solid and long-lasting with stable working performance. It supports dual use modes, you can hold it directly by hand or install the detachable base to place it stably on desk and table, perfect for indoor office, bedroom and outdoor activity use. Built-in 1200mAh 18650 lithium battery realizes convenient USB fast charging, compatible with power bank, laptop, USB adapter and other common power sources for easy power supplement. It owns excellent endurance performance, lasting up to 8 hours on low speed, 4 hours on medium speed and 2 hours on high speed after full charge within 2 to 3 hours. Scientific blade structure keeps low operating noise from 40dB to 60dB in different gears, quiet and will not disturb rest, study and work. Available in white and blue classic colors, stylish and versatile, it is a thoughtful and practical summer cooling gift suitable for men, women, kids and all age groups for daily cooling use.