Quiet Operate Mode: Engineered with reduction technology for quiet, ensuring undisturbed use in offices, libraries or other quiet environments while enhancing daily comfort 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 ABS Construction: ABS that durability and wear resistance compared to regular plastics, making it ideal for both indoor and outdoor use with extended use 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 Portable Waist Clip Design: This 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