Features 1、Without turning on the fan, the cold junction temperature can reach ‑3~5 degrees Celsius 2、High efficiency, small space cooling speed, can perfectly meet your needs 3、This product has low cost, low carbon and environmental protection 4、Small size, easy to carry and store, convenient to use and with good performance 5、Using high‑quality materials, strong and durable, has a long service life Specification Item Type: Semiconductor Refrigeration Size: Approx. 9.8 x 11.8 x 10cm / 3.9 x 4.6 x 3.9in Cold End Fan Size: Approx.4 x 4 x 1cm / 1.6 x 1.6 x 0.4in Cooling Fan Size: Approx.9 x 9 x 2.5cm / 3.5 x 3.5 x 1in Material: Aluminum, plastic Cooling Power: 60W Frost will only form when the ambient temperature is below 23℃ Package List 1 x Semiconductor Refrigeration