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This has a built in battery that is rechargeable. I charge mine about once per week. It charges super fast. If you use the pulse ox, it will drain the battery faster. I was charging mine every third day when I was using it every night.
Sorry, there was a problem. Please try again later.This is rechargeable. I find it last about 36 hours before needing a charge but it does charge quickly.
Sorry, there was a problem. Please try again later.The vivosmart 4 has a rechargeable battery that you charge about once a week using a USB cable. Debbie with Garmin
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