Quick and accurate test results with a simple one-button operationElectronic airflow sensor to ensure a deep lung sample for testing0.000 - 0.400% BAC (blood alcohol concentration)+/- 0.01% at 0.02% B.A.C. sensor accuracySemicoductor sensor with 2 digit display for accuracyIncludes 2 AA batteries mesh carrying case and 3 mouth pieces

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