【NISSYO's Unique W Cooling Structure】 Equipped with two cooling functions: an "instant cooling plate" and a "high-speed rotating fan." It cools not just the surface but also deep inside the body. Perfect for preventing heatstroke on hot summer days. 【W Cooling Plate for Wide-Area Cooling】 Features two instant cooling plates that utilize Peltier elements. It achieves a cooling area of over twice the conventional size (2512㎟), allowing for even cooling of the entire neck. 【360° Airflow & Three-Stage Adjustment】 The NISSYO neck cooling fan improves upon the vertical airflow of conventional neck fans, achieving innovative 360° surround airflow. The wind reaches every corner, up, down, front, and back. Furthermore, it is equipped with an industry-leading 8700r/m ultra-high-speed DC motor, which rotates the built-in fan blades to achieve powerful airflow. The wind volume can be switched in three stages (natural wind, refreshing wind, and strong wind) with each press of the switch. 【Quiet Design】 Equipped with a high-quality brushless motor. With an operating noise of only 25db, it can be used without worrying about the surroundings on public transportation such as trains and buses. 【4000mAh Large Capacity Battery】 Equipped with a PSE-certified 4000mAh large-capacity battery. It lasts for approximately 12 hours, allowing for use without worry even during long outings.