IMPORTANT ANNOUNCEMENT: BACtrack has acquired the AlcoHAWK brand and will now fulfill all AlcoHAWK breathalyzer calibration orders. Click here to order breathalyzer calibration. AlcoHAWK breathalyzers are no longer available for purchase. AlcoHAWK breathalyzer mouthpieces will be available for purchase starting again in July. Click here to shop BACtrack breathalyzers and mouthpieces.