ABS Construction: ABS that superior durability and wear resistance compared to regular plastics, making it ideal for both indoor and outdoor use with extended use Powerful Ventilation Output: Equipped with a high efficiency motor that delivers strong wind power to quickly dissipate heat, creating your cooling space even in crowded subways or buses during outdoor activities Quiet Operate Mode: Engineered with noise reduction technology for quiet, ensuring undisturbed use in offices, libraries or other quiet environments while enhancing daily comfort Portable Waist Clip Design: This sleek multifunctional waist clip fan features easy operate without tool installation, perfect for commuting, outdoor activities and various scenarios to keep you cool in hot weather Adjustable Speed Settings: Features 3 adjustable speed levels from gentle cool to powerful ventilation, catering to different preferences and suitable for all age groups in various environments