For determining the specific heat of matter or determining the Electrical Equivalent of Heat. Removable spring heating element operates on 0 to 6V DC and approximately 2 to 3.5W. Unit consists of a plastic outer can, a 1.7 cm thick Styrofoam lining, plastic insulator ring and aluminum heat reservoir designed to control heat loss. Reservoir has 150 ml capacity. Lid accepts heating element, stirrer, and thermometer cork Includes cover cap. Requires a multimeter to measure experiments.