“Does the compact case have a built-in battery or does it need to be plugged in during use?”
This question was generated by AI based on customer and product data.
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The compact case has a built-in battery. It can be charged with the included USB charging cable for 3 hours of power. This allows the user to cool the patches on demand for soothing relief anytime, anywhere.
This answer was generated by AI based on customer and product data.