Chip model: TEC1-12705 Wire specification: lead length 100 +/- 5mm RV standard wire single head 5mm tin plated Internal resistance: 2.4~2.7 ohm (ambient temperature 23 +/- 1, 1kHZ Ac test) Maximum temperature difference: Tmax(Qc=0) above 61. Working current: =5 (when the rated voltage starts) Rated voltage: DC12V (Vmax: 15.5V) Cooling power: Qcmax 45W Assembly pressure: 85N/cm2 Working environment: temperature range -55~83 (too high ambient temperature will directly affect the cooling efficiency) Encapsulation process: standard 704 silicone rubber seal all around Colour: white Material: semiconductor Size: 40 x 40 x 3.8mm Package Contents: 1 x Thermoelectric Cooler Peltier Only the above package content, other are not included. Note: Light 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.