Lightweight home-use electronic respiratory monitor that measures PEF and FEV1, offering greater accuracy than mechanical peak flow meters and eliminating the need for paper record cards. Measures FEV1 as well as peak flow, giving a clearer picture of lung health. Stores up to 600 test sessions and automatically assesses test quality. Large, easy-to-read display. No need for record cards. Includes; Monitor, Pouch, Instructions for Use, AAA Batteries x 2, and Disposable Plastic Mouthpiece.