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Amazon.com: Smart Health Ring, Sleep and Fitness Ring Wireless Sports Health Tracker, Continuously Records Heart Rate, Temperature, Blood Oxygen, Sleep Quality Tracker for Birthday Gifts (Black No. 17) : Electronics
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This handsome smart ring keeps tabs on your health so you can keep wearing your favorite watch - Yanko Design
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Amazon.com: eTTgear Fitness Smart Ring - Health Tracker for Heart Rate Monitor, Sleep, Pedometer, Body Temperature, Blood Oxygen, Smart Ring with APP, Bluetooth, IPX8 Waterproof, Women & Men : Sports & Outdoors
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The next Fitbit wearable could be a ring with many health tracking features - NotebookCheck.net News
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