There are plenty of fancy activity trackers on the market that you can wear on your wrist. Looking for something different? The Ear-O-Smart could be what you need. This is a smart earring that monitors your activity level, calories, and heart rate. It pairs with your smartphone to let you monitor your stats. It relies on the PPG technology to monitor pulse through blood flow in the skin. The battery is good for 8+ hours. Did we mention that you can customize your earring? This cool product is on Kickstarter right now.
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