USB charging and 3-speed wind speed Rechargeable lithium battery and USB charging, this USB rechargeable fan comes with a 2000mAh rechargeable lithium battery for easy charging via computer, phone charger, power bank , laptop, etc. When the ventilator is in charging mode, the red light will turn on. When charging is complete, the red light goes out. Green light fan in use, easy to operate.Three-speed adjustment function allows you to choose your favorite airflow. Cool and safe to cool quickly in 3 seconds. The bladeless design allows the elderly and children to use it without worrying that the fan will get caught in their hair, and the 360-degree ambient airflow brings you a cool experience. Adjustable fan in gooseneck The hanging neck fan uses high-quality silicone, the angle can be adjusted at will to better fit the skin and prevent it from slipping, and the elasticity is good to prevent breakage. The silicone also insulates the heat generated by prolonged use of the fan and provides thermal insulation. Quiet and durable We use an energy-saving brushless motor on this mini neck fan, the motor brushless makes this fan very quiet when operating. , which makes it easy to carry and does not tire even if worn all day.