The Apple Watch Series 9 design is identical to the Watch Series 8 to the millimetre, but the brighter display and the new SiP makes all the difference.
Apple Watch Series 9 - Apple
Apple Watch Series 9 vs Series 8: All the key differences
Apple Watch Series 9 vs Apple Watch Series 8: Should you upgrade? - The Manual
Apple Watch - Compare Models - Apple
Apple Watch Series 8 versus Apple Watch Series 9 - Buyer's Guide – Infinity Loops
Apple Watch Series 8 vs Apple Watch Series 9: What is the difference?
Apple Watch Series 9 vs. Series 8: everything new and different
Apple Watch Series 9 Vs. Series 8: How They Compare
Apple Watch Series 9 vs Watch Series 8 Best Copies 2023! HK9 Pro 2 vs GS PRO MAX Full Comparison!
Apple Watch Series 9 Vs Apple Watch Series 8! (Quick Comparison)
Apple Watch 9 vs. Apple Watch 8 — biggest upgrades
Apple reveals Apple Watch Series 8 and the new Apple Watch SE - Apple
Watch Series 8 45mm vs Watch Series 9 41mm Comparison - Swappa
Apple Watch Series 9 vs Series 8 - PC Guide