Application for small space cooling, air cooling dehumidification, semiconductor refrigeration learning , etc. Simple operation, good practicability. Cooling quickly, outstanding effect. Refrigeration effect depends on the size of the cooling space, ambient temperature, heat insulation, seal ability, etc. Semiconductor coolers are a form of solid state cooling that incorporates both semiconductor Technologies and electronic assembly techniques. Working current: 6A Working voltage: 12V Can also use 12V 10A power supply, frozen fast. Power: 72w Size: 165 x 90 x 98 mm/6.50 x 3.54 x 3.86inch Note: Please note that the type and old type of this product be sent randomly, and make sure you not mind before ordering. Color: As Shown Material: Metal + Electronic Components + Plastic Package Contents: 1Set * 12V 72W semiconductor chiller modules 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.