This thermoelectric cooler uses 12715 cooling module which has better cooling effect. Cooling block has area that can contact more air for fast cooling. Four hollow copper tubes with soda inside would quickly deliver the heat for greater cooling efficiency. It can be used to make a small refrigerator, mini air conditioner or cooling device for pets. Tested with a foam box that 23can drop to 0.6in half an hour, minimum-2 Colour:As Shown Material:PCB Package Contents: 1 * 12V 120W Semiconductor Cooling Plate Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.