Tiveco Handheld USB Rechargeable Fan - Black (black) Portable, foldable, and flexible design that allows the fan to be fixated onto a variety of objects and surfaces. Use the fan while camping, with a parasol, in the baby carriage, on the office desk, or in comfort of your bed. Patented 3.5" dual layer fan blade design. Adjustable fan head. Brushless motor for a stronger and more durable fan. Rechargeable and replaceable 2200 mAh lithium-ion battery. Can be recharged via USB charger, computer, or a power bank/external battery.