Currently on macOS Big Sur Beta. But can be downgraded to macOS Catalina if preferred. The item "Apple iMac 5k 4 GHz i7 24GB 1TB SSD Drive Retina display A1419 27 Late 2015" is in sale since Saturday, September 26, 2020. This item is in the category "Computers/Tablets & Networking\Desktops & All-In-Ones\Apple Desktops & All-In-Ones".The seller is "champion_athletics" and is located in Irvine, California. This item can be shipped to United States, Canada, United Kingdom, Germany, Japan, France, Australia, Denmark, Romania, Slovakia, Bulgaria, Czech republic, Finland, Hungary, Latvia, Lithuania, Malta, Estonia, Greece, Portugal, Cyprus, Slovenia, Sweden, South Korea, Indonesia, Taiwan, South africa, Belgium, Hong Kong, Ireland, Netherlands, Poland, Spain, Italy, Austria, Bahamas, Israel, New Zealand, Singapore, Switzerland, Norway, Saudi arabia, United arab emirates, Qatar, Kuwait, Bahrain, Croatia, Malaysia, Barbados, Bangladesh, Bermuda, Brunei darussalam, Bolivia, Egypt, French guiana, Guernsey, Gibraltar, Guadeloupe, Iceland, Jersey, Jordan, Cambodia, Liechtenstein, Sri lanka, Luxembourg, Monaco, Macao, Martinique, Maldives, Nicaragua, Oman, Pakistan, Paraguay, Reunion, Uruguay.