TENDENCIAS 7.5 Inch Massage Stick Real Touch Doll Skin

DEAR AMAZON MAYBE I MADE A MISTAKE ?.I ASSUME BATTERIES ALL GO IN THE SAME WAY.I COULD BE WRONG.THIS VIBRATOR I GOT NOW BATTERIESONE SIDE UP IS + SIDE OTHER BATTERIE -.MAYBE TOO QUICK.I SHOULD HAVE TRIED DIFFERENT COMBITNATIONS ?.