Three-Speed Adjustment&Long Long Working Time: Portable Neck Fan One-key control of wind force, simple operation. The wind is divided into three different wind speeds: low / medium / high, so you can control the wind as you like.After fully charged, the 1st to 3rd gears can last for about 20 hours, 12 hours and 7 hours respectively. Long battery life, lasting cool.4 in 1 Design small fan with Power Bank: Handheld fan , Desktop Fan and Neck Fan as a mobile phone holder . DAVID ROCCO handheld fan with 3000mAh power bank comes to solve this problem for you. 4 in 1 design brings convenience for girls, boys, sportsmen, teenagers, office workers, and so on. You can charge your phone, simultaneously enjoy the cooling air. Worthy to own one.Strong Wind & Ultra Quiet and USB Powered: Personal Fan Using the brushless motor and 7 fan blades, which can gather more airflow and generate stronger wind, moreover it can work more stablely than the others, so you can enjoy a cool and quiet journey. It's extremely convenient to use as you can get power sources such as USB adapters and power banks. So you could take it as a desk fan, a personal fan.Small and Foldable: Folding size: 8*8*3.5cm. You can put it in your pocket, backpack, etc. Take it with you when you are out shopping, camping, or climbing.180 Rotatable Fan and Portable Lightweight Design: The small USB fan supports 180 rotation makes you get airflow from different directions so that it keeps you cool at any angle. Mini handheld fan is only the size of a palm. Using a portable folding design, it will not take up too much space and weight when putting it in a backpack. Even in your pocket there is a breeze.