This tabletop fan earned The Best rating from the Hammacher Schlemmer Institute because it generated up to 71% more air velocity than competing models while emitting little noise. Air velocity was measured using an anemometer, the same instrument trusted by weather stations. The Best model produced 1,102 feet-per-minute winds, far superior to lesser models that mustered only 819 fpm. The Best Tabletop Fan produced only 0.8 dB for every foot-per-minute of air velocity, unlike lesser fans that generated up to 1.17 dB of noise. The three speed fan has a 9 1/2"-diameter base that ensures unobtrusive set up on a desktop and it oscillates 90º and tilts 60º for optimal air circulation. 14" H x 9 1/2" Diam. (4 1/2 lbs.)