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Rated 1 out of 5 stars
Wasn't what I thought it was.
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This reviewer received promo considerations or sweepstakes entry for writing a review.
I thought, it was digital. Instead, it reminds me of the instruments used by dr to measure how much air is in your lungs and expelled. When you are in a pre-asthmatic state, how much air to you think you have to forcefully blow into this meter? See it in person before deciding to buy.
