3 Adjustable Wind Speeds: The portable neck fan offers 3 different wind speeds, low, medium and high modes, which can be easily switched by the power button, keeping you cool in hot summer days. 360°Ambient Air: The small neck fan with turbocharger motor provides you with 360-degree quiet and powerful airflow. You can use it for exercising, cooking, doing housework, playing sports or traveling. 2000 Mah Rechargeable Battery: The portable fan built-in 2000 mAh battery, USB rechargeable, it takes about 3-4 hours to fully charge and can work for 3-7 hours (depending on the wind speed). Low Noise Bladeless: Foldable Neck Fan less than 40 dB, the neck fan is bladeless, you don't have to worry about your hair getting caught in the fan blades, and it is safe for children and the elderly. Portable and Folding: Can be put in a small bag. The ergonomic design is soft to fit the skin, effectively anti-slip, and can be freely adjusted in width to provide you with wonderful comfort.