If your Apple Watch says “Series 7000” on the back, this refers to the grade of aluminum that it is made out of. This is used on the first and second generation of Apple Watches. So if your Apple Watch says “Series 7000” on the back, it is most likely a first-generation Apple Watch.
Series 8 Models: A2770: 41 mm case with GPS. A2771: 45 mm case with GPS. A2772: 41 mm case with GPS & Cellular; North America. A2773: 41 mm case with GPS & Cellular; Europe & Asia Pacific. A2857: 41 mm case with GPS & Cellular; China mainland. A2774: 45 mm case with GPS & Cellular; North America. A2775: 45 mm case with GPS & Cellular; Europe & Asia Pacific. A2858: 45 mm case with GPS & Cellular; China mainland. Series 7 Models: A2473: 41 mm case with GPS. A2474: 45 mm case with GPS. A2475: 41 mm case with GPS & Cellular; North America. A2476: 41 mm case with GPS & Cellular; Europe, Asia Pacific & China. A2477: 45 mm case with GPS & Cellular; North America. A2478: 45 mm case with GPS & Cellular; Europe, Asia Pacific & China. Series 6 Models: A2291: 40 mm case with GPS. A2292: 44 mm case with GPS. A2293: 40 mm case with GPS & Cellular; North America. A2375: 40 mm case with GPS & Cellular; Europe, Asia Pacific & China. A2294: 44 mm case with GPS & Cellular; North America. A2376: 44 mm case with GPS & Cellular; Europe, Asia Pacific & China. Series 5 Models: A2092: 40 mm case with GPS. A2093: 44 mm case with GPS. A2094: 40 mm case with GPS & Cellular; North America. A2156: 40 mm case with GPS & Cellular; Europe, Asia Pacific & China. A2095: 44 mm case with GPS & Cellular; North America. A2157: 44 mm case with GPS & Cellular; Europe, Asia Pacific & China. Series 4 Models: A1977: 40 mm case with GPS. A1978: 44 mm case with GPS. A1975: 40 mm case with GPS & Cellular; North America. A2007: 40 mm case with GPS & Cellular; Europe, Asia Pacific & China. A1976: 44 mm case with GPS & Cellular; North America. A2008: 44 mm case with GPS & Cellular; Europe, Asia Pacific & China. Series 3 Models: A1858: 38 mm case with GPS A1859: 42 mm case with GPS A1860: 38 mm case with GPS & Cellular; Americas. A1889: 38 mm case with GPS & Cellular; Europe & Asia Pacific. A1890: 38 mm case with GPS & Cellular; China. A1861: 42 mm case with GPS & Cellular; Americas. A1891: 42 mm case with GPS & Cellular; Europe & Asia Pacific. . A1892: 42 mm case with GPS & Cellular; China. Series 2 Models: A1757: 38 mm case with GPS. A1758: 42 mm case with GPS. A1816: 38 mm case Apple Watch Edition with GPS. A1817: 42 mm case Apple Watch Edition with GPS. Series 1 Models: A1802: 38 mm case with GPS. A1803: 42 mm case with GPS. Apple Watch (First Generation): A1553: 38 mm case with GPS. A1554: 42 mm case with GPS. Apple Watch SE (Second Generation): A2722: 40 mm case with GPS. A2723: 44 mm case with GPS. A2726: 40 mm case with GPS & Cellular; North America. A2725: 40 mm case with GPS & Cellular; Europe & Asia Pacific. A2855: 40 mm case with GPS & Cellular; China. A2727: 44 mm case with GPS & Cellular; North America. A2724: 44 mm case with GPS & Cellular; Europe & Asia Pacific. A2856: 44 mm case with GPS & Cellular; China Apple Watch SE: A2351: 40 mm case with GPS. A2352: 44 mm case with GPS. A2353: 40 mm case with GPS & Cellular; North America. A2355: 40 mm case with GPS & Cellular; Europe, Asia Pacific & China. A2354: 44 mm case with GPS & Cellular; North America. A2356: 44 mm case with GPS & Cellular; Europe, Asia Pacific & China.
A2770: 41 mm case with GPS. A2771: 45 mm case with GPS. A2772: 41 mm case with GPS & Cellular; North America. A2773: 41 mm case with GPS & Cellular; Europe & Asia Pacific. A2857: 41 mm case with GPS & Cellular; China mainland. A2774: 45 mm case with GPS & Cellular; North America. A2775: 45 mm case with GPS & Cellular; Europe & Asia Pacific. A2858: 45 mm case with GPS & Cellular; China mainland.
A2473: 41 mm case with GPS. A2474: 45 mm case with GPS. A2475: 41 mm case with GPS & Cellular; North America. A2476: 41 mm case with GPS & Cellular; Europe, Asia Pacific & China. A2477: 45 mm case with GPS & Cellular; North America. A2478: 45 mm case with GPS & Cellular; Europe, Asia Pacific & China.
A2291: 40 mm case with GPS. A2292: 44 mm case with GPS. A2293: 40 mm case with GPS & Cellular; North America. A2375: 40 mm case with GPS & Cellular; Europe, Asia Pacific & China. A2294: 44 mm case with GPS & Cellular; North America. A2376: 44 mm case with GPS & Cellular; Europe, Asia Pacific & China.
A2092: 40 mm case with GPS. A2093: 44 mm case with GPS. A2094: 40 mm case with GPS & Cellular; North America. A2156: 40 mm case with GPS & Cellular; Europe, Asia Pacific & China. A2095: 44 mm case with GPS & Cellular; North America. A2157: 44 mm case with GPS & Cellular; Europe, Asia Pacific & China.
A1977: 40 mm case with GPS. A1978: 44 mm case with GPS. A1975: 40 mm case with GPS & Cellular; North America. A2007: 40 mm case with GPS & Cellular; Europe, Asia Pacific & China. A1976: 44 mm case with GPS & Cellular; North America. A2008: 44 mm case with GPS & Cellular; Europe, Asia Pacific & China.
A1858: 38 mm case with GPS A1859: 42 mm case with GPS A1860: 38 mm case with GPS & Cellular; Americas. A1889: 38 mm case with GPS & Cellular; Europe & Asia Pacific. A1890: 38 mm case with GPS & Cellular; China. A1861: 42 mm case with GPS & Cellular; Americas. A1891: 42 mm case with GPS & Cellular; Europe & Asia Pacific. . A1892: 42 mm case with GPS & Cellular; China.
A1757: 38 mm case with GPS. A1758: 42 mm case with GPS. A1816: 38 mm case Apple Watch Edition with GPS. A1817: 42 mm case Apple Watch Edition with GPS.
A1802: 38 mm case with GPS. A1803: 42 mm case with GPS.
A1553: 38 mm case with GPS. A1554: 42 mm case with GPS.
A2722: 40 mm case with GPS. A2723: 44 mm case with GPS. A2726: 40 mm case with GPS & Cellular; North America. A2725: 40 mm case with GPS & Cellular; Europe & Asia Pacific. A2855: 40 mm case with GPS & Cellular; China. A2727: 44 mm case with GPS & Cellular; North America. A2724: 44 mm case with GPS & Cellular; Europe & Asia Pacific. A2856: 44 mm case with GPS & Cellular; China
A2351: 40 mm case with GPS. A2352: 44 mm case with GPS. A2353: 40 mm case with GPS & Cellular; North America. A2355: 40 mm case with GPS & Cellular; Europe, Asia Pacific & China. A2354: 44 mm case with GPS & Cellular; North America. A2356: 44 mm case with GPS & Cellular; Europe, Asia Pacific & China.