4000mAh Portable Handheld Foldable Fan. 4000mAh Built-In Battery. Battery Capacity 4000mAh. 3 Connect to a 5V USB power source or use the built-in 4000mAh battery. • Built-in 4000mAh battery for extended cordless use.
The Foldable Portable Fan with 4000mAh battery and infinite speed settings would be best suited for outdoor applications, such as backyard gatherings or camping trips.
