Features:  A must have for your summers.  The smallest and lightest yet most powerful USB desk fan you could find out.  Plug it into the USB port of your laptop or desktop， and it begins to work.  Enjoy coolness while you're surfing the internet， listening to music， playing games， etc.  Gives no noise at all while working.  High quality durable metal frame and fan blades.  Head rotatable in vertical angle.  With an ON/OFF switch on its back. (speed cannot be adjusted)  Low power consumption.  Easy to carry.  Specifications:  Power source: USB port， or 5V AC adapter  Input voltage: DC 5V  Consumption: 2.5W  Material: Metal  Color: Black， silver (fan blades)  Cable length: Approx. 1.1m  Fan face diameter: Approx. 14cm  Product dimensions: 15x14x11.5cm (HxLxW)  Product weight: 338g  Package dimensions: 16x15.5x8.5cm  Package weight: 400g  Item Includes:  1 x Mini USB Desk Fan