Peak Flow Meter Alarms Blue finish * Combines the Wrist and Hand Blue finish * Combines the features of a rollator with a transport chair all in one unit * An individual can ambulate independently or be pushed safely by a caregiver * The footrests flip down and the padded backrest is reversible depending on whether you are using it as a rollator or transport chair * Equipped large non marring 8 black casters with soft grip tires ideal for both indoor and outdoor use * Easy to operate ergonomic hand brakes * Water resistant nylon pouch attaches under seat for added privacy and security of personal items * Fold strap for easy storage and transport * Designed to meet all your patients Offset rear wheel position adds additional stability and equally distributes the patient Assists in early detection of asthma attacks * Accurately measures peak flow * Reusable mouthpiece included with unit * Zone markers for easy reference * Dual flow range for adults and children * Ranges from 0 800 L M * Accuracy has been verified by an independent testing laboratory to meet NAEP (National Asthma Education Program) standards