They use an internal rechargeable battery (no removable batteries). The fans are USB-rechargeable and include a micro USB charging cable for recharging.
They offer three speed settings—Low, Medium, and High. A single On/Off switch cycles through the speeds.
Features include an adjustable breakaway lanyard for positioning and safety, an ultra-slim lightweight profile for comfort, and a built-in carrying handle for convenience.
The fans are made of plastic and are offered with a matte finish.
They are described as quiet-running and travel-ready, with an ultra-slim, lightweight design and USB-rechargeable power that allows multiple hours of operation on a single charge.