Thermoelectric cooler get ice cold in minutes or heat to boiling by simply reversing the polarity, it is used for numerous applications from CPU coolers to alternate power sources, or even for your own custom car drink warmer/cooler. Since it consist primarily of semiconductor material sandwiched between ceramic plates, so it has no moving parts. Made of high quality material, it is durable. The length of the cooler is 40mm, width is 40mm, height is 3.8mm. It is suitable for numerous applications from CPU coolers to alternate power sources, or even for your own custom car drink warmer/cooler. Item Name: Thermoelectric Cooler Material:Electronic Component Operating Temperature: -55 Celsius to 82 Celsius/-67 Fahrenheit to 179.6 Fahrenheit Working Current: 4.5A (Rated 12V), Imax: 5.58A Cooling Power: Qcmax 58-65W Model: TEC1-12706 Current Rating: DC 12V (Vmax: 15V, Starting Current: 5.8 A) Internal Resistance: 2.1-2.5Ω(Ambient Air Temperature 22-24 Celsius, 1kHz, AC Parameter Test) Size Details: Size: 40mm x 40mm x 3.8mm/1.57" x 1.57" x 0.15" (Approx.) Cable Parameter: RV Standard Wire, 295mm- 305mm/11.61" - 12.01" (Approx.) Notes: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Package Includes: 1 X Thermoelectric Cooler Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-Dadangjia