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MT6761 quad-core CPU, with Android 9.0 system, 4GB RAM and 64GB ROM. System: Android 9.0;. Built-in professional heart rate detection sensor, supports

2.88 Larger Screen 4G Smart Watch S999 Android 9.0 4GB+64GB Heart Rate Monitor

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2.88 Larger Screen 4G Smart Watch S999 Android 9.0 4GB+64GB Heart Rate Monitor

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