Lucstar Desktop USB Fan Personal Desk Table Elegant Retro Quiet Fan with Powerful Wind for Office Work, Home,Living Room Bedroom Sleep, Classic Black 6 Inch

Can anyone tell me is there a major difference, between a USB 3.0 and a USB 2.0? thank you. USB 3 is faster than USB 2. A USB 3 drive or whatever will function when plugged into a USB 2 socket, only it will do so slower. The cable will work on both, but we suggest you use for these devices USB 3 slot. How to set the USB timer? The first function: just set the working time; The second function: set the appointment time and the period of working time. With the help of our USB timer, you needn't pay an extra money to buy luxury fan which has the function of appointment. How quiet this fan is? Our store has a 7 inch super quiet fan, please go to check it if you have an allergy to the sound. It still has a little sound of wind(about 35db=almost peaceful), but it wouldn't bother your mind or disturb your sleep. The effective distance of wind is up to 5 feet. If you put it on your working table, it really could let you feel a strong breeze like the feel when you are driving a motorbike at the speed of 10 MPH. No vibrating, resist-rust, no heat. What is the spirit of Lucstar? Quality, classic, beautiful and concise are our pursuing, and also they are what we would like to share with our customer. Where can I look the dimension and effect of the fan? Please watch the video of the real object on YouTube. Just search "Lucstar usb fan" Product detail: Fan *Powed: USB plug;*Material:PP and ABS plastic;*Size:180*105*165mm(approx)*;N.W.: 200-300G?*Voltage: DC 5V;*Power consumption: 2.5A0.25W;*Power cord length: 0.8M USB charger timer *Power: USB plug;*Material: PP and ABS plastic;*Size:9*1.5*2.5cm:Voltage: DC 5V,0-2A USB extension cord Type:USB 2.0. Length:5 feet=1.5 meter. Support: Data transmission, card reader, USB cable extender. USB wall mount charger Type:5 V1A. can't fast charger.