WheezeScan is designed to help parents detect wheeze in children with asthma symptoms. Powerful, portable device that tells you if wheeze is present in less than 30 seconds, removing doubt in the moment of breathing distress. With its complimentary mobile app, WheezeScan does more than accurately detect wheeze. The app allows you to log wheeze episodes, symptoms, and triggers that can be shared with your childs doctor to help them manage your childs care. Compatible with iOS 10 and above, and Android OS 7 and above. Whats in the box: WheezeScan 2 "AAA" alkaline batteries Storage case Instruction manual Quick reference guide 3 years warranty after date of delivery in accordance with the Warranty Card.