1) Size::32*21.5*3.5cm 2) Material: Plastics 3) Packing:Gift box (English,Chinese,Japanese) 4) Port: USB 5) Fun:Oil impregnated bearing 6) Fun speed:1800-3000 7) Noise: 23 db 8) Colour:shape of leaf (art oil spray) 9) Convenient reliable and comfortable to carry 10) No need for any installation 11) Compatible with any notebook computers