What is The Model Number Of Apple Watch Series 4 (GPS + Cellular) Aluminum

Apple Watch Series 4 (GPS + Cellular) Aluminum

40mm case (Model: A1975 North America, A2007 Europe, Asia Pacific, and China mainland)
44mm case (Model: A1976 North America, A2008 Europe, Asia Pacific, and China mainland)
Space gray, gold, or silver aluminum with a red ring on the Digital Crown
Ion-X glass, sapphire crystal, Retina display, and a ceramic back