The compact EHEIM feeding unit is operated by batteries (included). The actively aerated feeding chamber gives dry food all the way down to the last flake. With easy to make use of programming, you make a decision when the fish will have to be fed. Double dosage of the food may be supplied within the programming. “Snacks between meals” are imaginable on the press of a button at any time. A warning system informs you of low battery power. Capacity approx. 100 ml.