The Grindmaster Frozen Beverage Machine is very versatile. You can serve frozen cappuccino/latte, frozen cocktails, granita, frozen fruit juices, frozen lemonade or slush. You can choose from 8 signs: Lemonade, Margarita, Smoothie, Cappuccino, Cocktails, Pina Colada, Daiquiri, and Beverages. The 3721 is a high output machine for more daily use. The Freezing Cylinder automatically refills from the refrigerated storage hopper...no need to wait for product to refreeze after refilling. A Mix Low light indicates when mix is low in storage hopper. Machine Capacity Storage: 3 gal., Frozen: 1.5 gal. Air Cooled. 220V, 56-1/4 x 16-3/4 x 29, NSF approved.