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Fourth Frontier | Frontier X2 Smart Heart ECG Monitor | Real Time Wearable Heart Rate Monitoring | ECG Chest Strap Heart Tracker
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Wellue DuoEK ECG Monitor Heart Monitor Chest Strap, Wearable ECG Monitor, Bluetooth Wireless with iOS & Android APP, 15 Minutes Monitoring, Portable Heart Rate Monitor Mobile for Home Use (Black) : Amazon.co.uk:
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