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Samsung Galaxy Watch9 (44mm) is a 2026 standard smartwatch running Wear OS 5 with One UI Watch 7. It features Knox Vault security and Verified Boot on the wearable platform, but like the Watch Ultra2, its authentication model is dependent on the paired Android phone — the watch itself offers only PIN unlock without standalone biometrics. Communications use Bluetooth 6.0 LE Secure Connections and WPA3. Health data is AES-256 encrypted at rest. Smaller battery (445 mAh) than the Ultra2 but same security architecture. Receives 4–5 years of OS + security updates. Wear OS smartwatches have a limited attack surface and are not primary spyware targets.
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