Title: Is not rechargable without extra battery pack
Product review: Buyer Beware: Even though this product looks like it is portable, it does NOT come with a rechargable battery. You have to either plug it in every time you use it or pay an extra $40 for an "optional" separate battery pack (directly from the company). The advertising keeps that fact tucked away. It seems to work okay but the fact that the thing is small and "portable" is useless when you need to keep it tethered to an electrical outlet.
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