The AlphaCool Personal Air Conditioner Neck Fan offers immediate heat relief with minimal noise. This personal air conditioning fan boasts a semiconductor cooling panel on the back of the neck and 360 of airflow around your neck and head with 80 air outlets. Made out of ABS and silicone, this neck cooler has a whopping 4,000 mAh battery with quick 2-hour charging time and can keep you cool for up to 36 hours. Simple button controls allows you to easily change between the 3 speed settings. This bladeless fan is safe to use with long hair.Manufacturer model #: AC-BNF2-LI. 4,000mAh rechargeable built-in battery Large refrigeration panel on back of neck 360 of airflow 36+ hours of battery life Low noise 3 speed settings More than 80 air outlets Bladeless fan, safe to use with long hair Simple button controls 2-hour charging time ABS and silicone construction