Super Strong Wind Potable Waist Clip Fan 9V 7V 5V USB Switch Control Three Level Speed 1. Product Parameter Fan material Plastic Hoursing Fan color Black Fan size 74x70x62mm Fan weight 90g Fan motor Brush motor Speed level Three Wind speeds Switch With one USB switch cable Cable come out with DC plug at the end of cable connecting to USB switch cable Working power 10W Noise Less than 46DB Working time 6-12H with power bank 10000mAh Power source Use power bank Product list