This LCD wine thermometer has a foldable probe that stores in the back of the unit. Select wine type with the SELECT button. Then dip the probe into wine. Unit will beep when it reaches optimal temperature. Breathing timer feature counts down (0-30 min.) after being placed into the bottle. Auto shut-off after 30 min. 5-1/8” high, 1-3/4” wide, 1-1/4” deep.