given to minus 18 degrees could only reach minus 15. after 24 hours at + 18 has the outside but the water bottles were frozen in 12 hours. not to freeze that I bought but to keep the meat 2 degrees what he does very well as far as 220 v 12 v regulates on 1degré very quiet in the hotel room it forget nothing to do with the absorption refrigerators or furrier only effect the price made the difference but comfort is paid, remains to know in time if the electronics will .If the manufacturer increased the guarantee is 2 years old I think he must believe! PK