Starsource Adjustable Four Fan Blade 6 Inch USB Mini Desktop Fan With ON/OFF Switch ( Blue ) Four fan blade, rust-proof of the surface paint, durable Size: 19.5cm*9.3cm*20.5cm. A great way to keep yourself cool with while on your computer. Simply plug it into your USB port and switch it on for instant use. No software is needed to run this, it simply draws power from the USB port. quiet operation. Adjustable 360o tilt,Quiet fan with easy ON/OFF Switch 100% brand new and high qaulity, Can be used on laptop, PC, portable DVD/TV/Media player with USB port Four Fan Blade get a strong, steady stream of cool air directed where you want it with this Desktop USB Fan