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Title: Works well if you use it right
Review: I wanted to write a review to explain why people say "the readings vary significantly". If you read the instructions it says to hold the device at arms length. Holding it at arms length I scored 19.5%, holding it with my arms bent at a 45 degree angle I scored 17%, and holding it up against my body I scored 13%. If you use it right this device is excellent for what it is meant for.
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