The41mm sized Series 8 watch gets a 1.53-inch display, while the 45mm version has a bigger 1.78-inch screen. The Watch Ultra, in comparison, is Apple’s biggest smartwatch yet, with a 1.92-inch Displaysize is one of the most significant differences between the ‌Apple Watch SE‌ and Apple Watch Series 7. The SE features borders around its display that are 3.0mm thick, but the Series 7 TheS9's new 4-core Neural Engine can handle machine learning tasks at speeds up to two times faster than the Watch Series 8. Both models operate on the just-released watchOS 10. However, bear in mind that the Watch Series 8 will get the official update on Monday, September 18. AppleWatch Ultra vs Garmin Fenix 7: Price and availability. The Apple Watch Ultra costs $799/£849/AU$1299. It's a singular model, outfitted with cellular support. In other words, cellular TheApple Watch SE features the S5 Chip, while the Apple Watch Series 7 offers an S7 Chip. The Series 7 is therefore, 20% faster than the SE. The Apple Watch Series 7 has a blood-oxygen sensor and you can even perform an ECG. If you're interested in health tracking, you should be sporting an Apple Watch Series 7. The Apple Watch Series 7 Thedevice has a feature that allows you to find your smartphone if you have misplaced it. Has call control. Apple Watch Ultra. Garmin Fenix 7. The device alerts you to incoming calls on your smartphone, and allows you extra control such as muting or rejecting the call. Has notifications. Apple Watch Ultra. TheApple Watch SE starts at the retail price of $279 for the 40mm case, which is considerably lower than the Series 7. The 44mm case retails for $309. Although there are only three case finishes AppleWatch Series 7 vs. Fitbit Versa 3: Lighter on price but lacking features. Fitbit Versa 3 Rock (Image credit: Jeramy Johnson / iMore) The Versa 3 is much less expensive than the Apple Watch Series 7; there's almost a $200 difference. That's a huge chunk of change. However, at that lower price, you're going to miss out on many vGpcS.