The Slim Portable Fan by Aecooly is a thin handheld fan that offers up to 17 hours of cooling time with its USB rechargeable feature. Its sleek design and compact size make it easy to carry around for on-the-go use. The fan is powered by a USB source, providing convenience and portability. Its rechargeable function ensures that you can use it repeatedly without needing to constantly replace batteries, making it an energy-efficient and eco-friendly option for staying cool indoors.