Title: Good for a little while...
Product review: Greatest 21st bday present ever.Except when it gets over-used. The company has a service by which they recalibrate it (for $20) if it has been used too much and isn't reporting the right levels. I have only used it moderately (occasionally with friends and always per the instructions), but the levels it reports now are through the roof and very inaccurate. I have sent it in twice to get serviced, and within a couple uses afterwards, it was bad again.Other issues I have with it: the button gets pressed very easily, even through the case, which causes it to beep.
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