Air outlet: 30W supply airflow 0.5m³/min, 40W supply airflow 0.8m³/min, 60W supply airflow 1m³/min, 80W airflow blown 1.1m³/min. Copper coils: High quality motors provide smooth and steady wind output. No noise, delay heat dissipation, and can work continuously for a long time. Fixed seismic design: thickened and widened fixed bracket, strong and solid, can absorb the vibration generated by the motor during operation , reduce noise and ensure that the fan continues to work stably. Housing: The fan is handcrafted from pure iron, and the motor performance is also very stable. It can adapt to various harsh environments and will not perform poorly after long-term use. Uses: 30/40 watts are suitable for home use, and 60/80 watts are suitable for barbecue. Lightweight and easy to carry.