Air outlet: 30W supply airflow 0.5m/min, 40W supply airflow 0.8m/min, 60W supply airflow 1m/min, 80W supply airflow 1.1m/min. Copper coils: High-quality motors provide smooth and steady wind output. No noise, delayed heat dissipation, and capable of continuous long-term operation. Fixed seismic design: Thickened and widened fixed bracket, strong and solid, absorbs vibration generated by the motor during operation, reduces noise, and ensures stable fan performance. Housing: Fan is crafted from pure iron, with highly stable motor performance. Adapts to various harsh environments and maintains reliable operation after prolonged use. Usage: 30W and 40W models suitable for home use; 60W and 80W models suitable for barbecue applications. Lightweight and easy to carry.