1,Yellow, green, pink color 2,With Low mix light alerts 3,With Hardness LED Indicator 4,2+1mixed flavors,floor model Soft ... pressure etc.Options:a) Air Pump(Model number with letter"P") Grand mix with more air to a sofer and smoother ice cream ... solenoid valve to pre-cool mix and maintain mix below 4.5°Cc) Keep fresh system(Model number with letter"M1") During long ...