Brushless Motor - Super PowerThe Whatook handheld fan uses a three-phase brushless motor with a maximum wind speed of 8.5m/s, and its maximum speed is 3 times that of ordinary personal fans, up to 13,500RPM/minute. Super high speed brings cooler wind experience. The design is ideal for outdoor crowds, and even if the outdoor is hot, this fan can make you feel cool quickly, which is a must-have for summer.