The upgraded neck fan is meant to be hung around the neck to free the hands, and it brings cool & fancy. Designed as a headphone, it's great for outdoor sports, shopping and even walking anywhere in hot weather. It is lightweight, putting less strain on the neck, and the body can be adjusted to a range of angles to better fit the skin and effectively prevent slipping. There are 3 fan speeds for different cooling requirements, which can be adjusted by pressing a button on the side. The built-in 5000 mAh li-ion battery provides longer working hours duration (depending on different speeds).