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I went from a series 4 to a nine. that was a significant change and a good one. I don't have enough information on a series 7 that I could recommend the upgrade. I would say if you need a Oxygen monitor then I would consider it,
Sorry, there was a problem. Please try again later.Screen size (options) Battery life Display surface Significantly faster Durability Always on display
Sorry, there was a problem. Please try again later.I’m not sure but I love my Apple Watch series 9
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