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Apple Watch Series 7 Lacks Hidden Diagnostic Port, Likely Uses Wireless Data Transfer Instead - MacRumors
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Amazon.com: Apple Watch Series 8 [GPS + Cellular 41mm] Smart watch w/ (PRODUCT)RED Aluminum Case w/ (PRODUCT)RED Sport Band-M/L. Fitness Tracker, Blood Oxygen & ECG Apps, Always-On Retina Display, Water Resistant :
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Rumor: Apple working on 'smart bands' for Apple Watch to add new health tracking functions | AppleInsider
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