GogoTool USB Fan circulates the air, maintaining a fresh, cooling breeze and reducing humidity level. It can also help ventilate area and remove dangerous gases and fumes. Feature Easy to Operate,portable to carry,high compatibility,360 degrees rotation and power saving. Long USB Cable: Come with a 80cm long usb cable. Adjust any angle you need: Vertical 360° manual adjustable. OPERATION INSTRUCTION 1. USB Cable connect to USB Port of PC, laptop, portable charger, etc. 2. Turn on the Switch to minus on the back of usb fan. 3. Turn off the Switch to " O "on the back of usb fan. Specifications: Frame: Metal Weight:300g Blade Size: 4 in Plug Port : USB 2.0 port Product Dimensions: 5.5 x 3.0 x 5.9 in Package Included : 1x USB Mini Desk Fan Compatible widely: The fan can operate from computers, laptops, and other USB outlets, which help you enjoy the fan anytime anywhere in the Home,Office , Dorm room and etc. Note: 1. If there is noise, tighten the screws on both sides with the driver, the noise disappears. 2. All products have been rigorously tested by GogoTool, If due to accidents, such as bumping or jolting, during transportation, please do not hesitate to contact us, and we will try our best to assist you!