[Wind Speed Adjustable] The handheld fan has three wind speeds. You can adjust wind speeds according your needs. Soft mode could be used during your sleeping, run up to 9 hours. Speed two creates natural wind runs up to 5 hours. Strong mode is very powerful for cooling your body and run up to 3 hours. [Lightweight and Portable] The mini handheld fan has multiple usage scenarios, it not only can be handheld, but also can be folded as the picture shows. You can also hang it around your neck at any angle. It can also be used as a eyelash fan. It will be very easy to carry around during hot summer. [Innovation design]: The foldable fan can be rotated 180 degree, the fan has a noise reduction feature. You can use it during your sleep. The fans cover is removable and easy to clean, so you dont have to worry about dust affecting air quality and health. [Multiple function ] This portable fan will keep you cool during hot Summer, it is perfect for Indoor, Outdoor, Camping, Traveling. Its can also help you Make up, Drying Eyelashes, Make up Spray, or Nail Polish. [USB charging and Warranty]: The rechargeable fan is powered by a 2000mAh Battery. Battery is made by high quality material and can be recharged more than 300 times for a safe and stable use. It has a longer life than other fans in the market. The fan can be charged via USB cable, laptop, mobile power or car charger etc.