Features: 1) Material: acrylic 2) Two fans\'\' size: 6 x 6 x 1cm 3) Fan speed: 3,200rpm 4) No power adapter required, conveniently powered through USB port 5) Great ergonomic shape 6) Plug and play for USB devices, such as mouses, keyboards, card readers 7) Support low noise 8) Blue light shine while using