led usb fan for desk 1.LED color:red,blue,green,yellow, ... &ROHS standard 4.Factory led usb fan for desk/usb flashing fan with message/usb led slogan fan1)USB Desktop LED Message Fan2)Product size ... , blue,green,white and so on.6)Battery power: 5V USB or 3xAAA batery7)Meet CE&ROHS standard,eco-friendly8)OEM ...