MiniMax Deluxe Portable 737 4.5" Battery Operated Fan - WhitePortable fan that folds flat. 300 hours use from 4 D cell batteries. Powerful but quiet airflow.Energy efficient, compact and powerful. The model 737 MiniMax fan is a favorite for hurricane preparedness because of its powerful airflow and efficient battery use. Ideal for boaters looking for added circulation without having to wire into their 12 volt system.Features: Variable speeds Anti-slip rubber feet Long life motor AC adapter readyBenefits: Match air speed to each different use 300 hours use from 4 D cell batteries Economical circulation Sleeping comfort Powerful but quiet airflow Battery efficient Use on or off the boat