There are plenty of cheap smartwatches that can track your daily activity. What if you want you use your Rolex as a smartwatch? The XBAND has you covered. It is a smart strap that tracks sleep, fitness, and health in general. It is designed to fit most 20mm watches. It has over 40 sport modes. You can also use this track your nightly heart rate and sleep score.
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You can rely on the power of AI to evaluate your health. This watch lasts over 7 days on battery. It is 5ATM water resistant. It has an accelerometer and PPG sensor built-in. You can find this project on Kickstarter.
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