Brand: RochModel: RWF-1812-CPower Output: 55 WattsSpeed Adjustments: 3 distinct speed settings (Low, Medium, High) controlled via pull strings.Blade System: Engineered with a specialized dual-blade / double helix system (5 aerodynamic main blades coupled with interior mini-blades) to generate maximized airflow.Energy Efficiency: Designed for low power consumption while maintaining optimal high-speed ventilation.