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Title: One of my best purchases
Review: I never tried another brand but I know that the USB versions won't work well because obviously usb port cannot provide enough juice. This Norpro 5569 comes with a power adapter, so it gets enough power. It does it's job very well. It won't heat up cold beverage but maintains it, which is want I was looking for. I have been using it for more than 6 months. I would definitely recommend it to anyone.
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