Schallen Mini 4" Portable USB Fan - Available in Chrome & Copper Simply plug into your UBS device for instant cooling, compatible with computers, laptops, portable chargers and other devices with USB output. This product come with a fitted on/off switch which is simple to operate Fitted with a quiet motor and lightweight metal blades, the fan produces the right amount of cooling, with an quiet operation that won't affect your work or rest. This product is made from hard wearing long lasting material, with a metal frame & aluminium blades.