? .? It is equipped with infinite variable speed functions to meet your needs in the air volume and different usage scenarios up to 650 CFM. .? [Low noise design] Working with a battery construction site fans, the lowest level of ultra -powerful air flow, which provides air intake design, uses high quality ABS fan wings noise <30db. It does not affect your sleep or work. .? It is perfect for keeping you cool on the construction site and camp. .? If you have any questions during use, please feel to us. .?
Fruugo United Kingdom