Upgraded five wind gears provide powerful airflow, ensuring constant cooling Dual air inlets and 80 air outlets enhance circulation for true 360-degree rapid cooling 4,000mAh battery supports five to 15 hours of use, for a refreshing feel Fast two-hour charging keeps you cool all day Under 25dB ultra-quiet performance ensures discreet use Neck support conforms to the natural curve of your neck, preventing a sticky and stuffy feeling during long wear The design is safe and secure, ensuring it stays in place on your neck without slipping, and it won’t trap your hair Ideal for school, work, gym, outdoor activities, and summer adventure