about this projectThree-speed adjustment & long working time: The portable neck fan controls the wind power with one button, and the operation is simple. The wind power is divided into three different wind speeds: low/medium/high, and you can control the wind power as you like. After fully charged, the 1st gear to 3rd gear can last for about 20 hours, 12 hours and 7 hours respectively. Super long battery life, durable and cool.4-in-1 Design Small Fan with Power Bank: Handheld fan, desktop fan and neck fan as a phone holder. 3000mAh power bank handheld fan to solve this problem for you. The 4-in-1 design brings convenience to girls, boys, athletes, teens, office workers and more. You can charge your phone while enjoying the cool air. It's worth having one.Strong Wind Ultra Quiet USB Power Supply: The personal fan uses a brushless motor and 7 fan blades, which can collect more airflow and generate stronger wind power, and it works more stably than other fans, allowing you to enjoy cool and quiet journey of. It's very convenient to use because you get power sources like USB adapters, power banks, etc. So you can use it as a desk fan, personal fan.180 Rotatable Fan & Portable Lightweight Design: The small USB fan supports 180 rotation, allowing you to get airflow from different directions, keeping you cool at any angle. The mini handheld fan is only the size of a palm. With a portable and foldable design, it won't take up too much space and weight in a backpack. Even keeping it in your pocket is a breeze.