3 SpeedWith 7 blades you create a stream of air to keep you cool and relaxed. (speed 1 lasts for 3.5 hours, speed 2 lasts 2.5 hours, and speed 3 lasts for 1.5 hours). Adjust the appropriate fan speed by pressing the power button repeatedly. Used As A Desktop FanThis product has a foot, and the fan can be mounted on the foot as a desk fan, it is quite nice to be a makeup fan! Portable Mini Electric FanCan be used while sleeping, working, eating at home, in the office or at school. Can connect to any PC or laptop via USB, or connects to AC port using USB AC adapter. It is the best gift for family, friend, colleague or teacher. SuggestionPlease be careful when using it, so as not to scratch the leaves. Note: Make sure children don't get near the fan, they may hurt themselves on the rotating blades!