DC fan with Brushless motor and centrifugal blower impellerapplied to medical equipment like CPAP,fuel cell,etc. Voltage: ... 12VDC DC fan with Brushless motor and centrifugal blower impellerapplied to medical equipment like CPAP,chair air,fuel cell ... ,etc.Compact Mini Size: Diameter: 70mm; Height: 40mmOnly weights 67 gram;With centrifugal turbo impeller fan ...