Color‎:‎ White Quantity‎:‎ 1 Material‎:‎ Plastic Emitter type‎:‎ LED LED quantities‎:‎ 11Fan blade quantities‎:‎ 2 Interface‎:‎ USB 2.0 USB cable length‎:‎ 100cm Compatible with USB 1.1 and USB 2.0 USB interface 5V of direct power supply‎,‎ environmental and energy‎-saving design‎,‎ with 250mA power consumption Plug and play‎,‎ only need to insert USB port and press the switch to power on Fan blade with LED luminous software board‎,‎ can showing advertising words or pattern when rotation‎.‎ And make the unique advertising text‎,‎ letter‎,‎ Arabic numbers and patterns according your requirement‎;‎ Supports 6 paragraphs of different contents‎,‎ 16 characters display for per paragraph Multi types of displaying advertisement‎:‎ From left to right side or from right to left side verbatim display Programmable IC fan‎,‎ directly connected computer the change the content‎,‎ memory capacity up to 2KB ‎(‎Chinese words up to 200‎,‎ English words up to 400‎)‎‎,‎ theoretical rewrite times up to ten thousands‎.‎ Current less than 0.5A‎,‎ power less than 0.25W Environmental temperature‎:‎ ‎-10~40‎'‎C Packing list‎:‎ 1 x USB fan 1 x USB cable ‎(‎100cm‎)‎ 1 x CD