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. About Shipping: All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. Any questions, please feel free to contact us During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 38907 hours, wish you a happy shopping Thanks for your cooperation and we'll make you feel satisfied.