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, 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. easy to carry.