- Three-Speed Adjustment & Extended Battery Life : Enjoy customizable comfort with the Neck Fan's one-key wind control. Choose from low, medium, and high speeds to suit your needs. After a full charge, the fan operates for approximately 20 hours on low, 12 hours on medium, and 7 hours on high, ensuring you stay cool for hours on end. - 4-in-1 Versatility : This innovative fan doubles as a handheld fan, desktop fan, neck fan, and mobile phone holder. Featuring a 3000mAh power bank, it allows you to charge your phone while enjoying refreshing airflow. Ideal for students, athletes, and office workers, this multi-functional design is a must-have. - Powerful & Quiet Operation : Equipped with a brushless motor and 7 fan blades, this personal fan generates robust airflow while maintaining a quiet performance. It is perfect for use in various settings, whether at your desk or on the go. The fan can be powered via USB, making it compatible with adapters and power banks. - Compact & Portable Design : With a folding size of just 0.7 x 3.15 x 6.5 inches, this fan easily fits in your pocket or backpack. Take it along for outdoor activities such as shopping, camping, or hiking, ensuring you have a reliable source of cool air wherever you go. - Practical Use Scenarios : Use it while studying at your desk, enjoying a day at the park, or during your commute. Its versatile design and powerful performance make it an essential accessory for anyone seeking comfort in various environments.