SF-2012 is an ultra slim digital kitchen scale with sleek stainless steel weighing surface. Weight readouts are displayed in four different modes: grams(g)/ounces(oz)/pounds & ounces(lb:oz)/milliliter(ml). An automatic tare button quickly calculates the net weight of ingredients by subtracting the weight of the container in which the ingredients are placed. This is helpful for measuring ingredients that need to be contained in a bowl or on a plate. A convenient water volume measurement function is also featured. Volume readouts are displayed in milliliter(ml). With its 1g (0.05oz) accuracy, SF-2012 is accurate enough as a postal scale for weighing letters and small packages up to 11 lbs (5kg). This item operates with two AAA batteries.