OldNewb....the batteries go in the base 8D size for the 10" model last approx 3 days........and then you just fold the fan flat against the base you can see the hinges on bottom.
2 speeds also.
The handle tucks in also.



MAXIMUM AIR CIRCULATION. THE MOST POWERFUL FAN OF ITS KIND
LIGHTWEIGHT & TRULY PORTABLE (less than 3 lbs. without the batteries or adapter)
FOLDING DESIGN – EASY FOR TRANSPORTING AND STORAGE.
UP TO 72 HOURS BATTERY LIFE UNDER TYPICAL USE (ALKALINE BATTERIES)
AC/DC ADAPTER JACK (ADAPTER IS INCLUDED) WHEN BATTERY USE IS NOT REQUIRED FOR INDOOR USE