Hardly used. Did one grow cycle into flower and got done with it.. been sitting in my closet.

The VIVOSUN 4" Inline Fan Air Carbon Filter Kit with Speed Controller is a black air circulation fan designed for hydroponic gardening. It has three blades and three speeds, with a power of 60W and a voltage of 120V. The fan is powered by USB and has an exhaust ventilation system. The shape of the fan is quarter circle, and it operates at a power frequency of 50Hz.