Air outlet: 30W supply airflow 0.5m or min, 40W supply airflow 0.8m or min, 60W supply airflow 1m or min, 80W supply airflow 1, 1m or min. Copper coils: 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 or 40 watts are suitable for home use and 60 or 80 watts are suitable for barbecue. easy to carry. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.