1,Stainless steel body 2,Speed cooling,high prodcution 3,With high quality 4, ... over-freezing,low voltage,high pressure etc.Options:a) Air Pump(Model number with letter"P") Grand mix with more ... air to a sofer and smoother ice cream.Offering high ... maintain mix below 4.5°Cc) Keep fresh system(Model number with letter"M1") During long no-use periods ...