... ,all-metal structure 2.Use for cooling or decoration 3.Ultra-quiet,competitive price&capacity super thin ... blades can be metal or plastic on your options,new DC brushless motor, strong wind, super quiet. 2. ... 5V USB(cable length:1.2m) power supply, metal shell, special mesh ... continuously with long time. 5.Fashional and contracted metal style, noble and elegant. 6.Fan is ...