Features a two-stage neck cooling plate and three-level wind speed adjustment. The ceramic cooling plate uses a Peltier effect cooling system, also used in non-freon coolers, to provide a refreshing coolness. Safety is also considered as it is a wearable device, and a PSE technical standard compliant battery is used. Sufficient operating time is ensured, and to protect the electronic circuits and battery from heat generated during operation and charging load, it is designed so that it cannot be used while charging. Size: W approx. 195mm x H approx. 290mm x D approx. 60mm / Maximum operating time: Airflow (strong): approx. 12.5h, Cooling (strong) approx. 3.5h, Airflow (strong) + Cooling (strong) approx. 2h COOL & BLOW NECKFAN White, Fan, Heatstroke Prevention, Cooling, Airflow 19-20 0891