... . Remote control,Safe 4.power consumption :10-32 W electric portable ventilation bladeless fansSpecification, description:(1) Color: White, silver(2) ... through an annular aperture and over a 18° airfoil-shaped ramp, generating an uninterrupted stream of smooth airAir is drawn ... an annular aperture It passes over a 18° airfoil-shaped ramp, which channels its directionAir is induced: Air behind the ...