Ryobi's ONE+ 18V Portable Fan, item P3310, has 33 percent more air speed than the previous model, with eight adjustable positions to direct air. It can stand on the base, or has a built-in hanging hook, a hook for hanging from wire or line, and screw mounting holes for affixing to surface. The design with integrated handle maximizes portabilityfor the 2-1/2-pound fan among these hanging options. The fan's rpm at high speed is 2,100 and at low speed is 1,400. The P3310 fan has over 10 hours of runtime when using the P104 lithium-ion battery on low setting and is compatible with any Ryobi 18V battery. It's priced at $29.97.