The Contec sp80b is a handheld, portable spirometer designed to measure lung function in both clinical and home settings. It uses infrared technology to diagnose respiratory conditions, making it perfect for managing diseases like asthma and COPD. Key Features: Measurements: Measures Forced Vital Capacity (FVC), Forced Expiratory Volume in one second (FEV1), FEV1/FVC ratio, Peak Expiratory Flow (PEF), and Forced Expiratory Flow (FEF25, FEF50, FEF75, FEF2575). Data Transfer & Storage: Stores up to 9,999 cases and features both Bluetooth and USB connectivity for data transfer to a PC. Display & Interface: Features a 2.8-inch color LCD screen that displays flow-volume and volume-time charts. Design: Compact, portable, and user-friendly with one-button operation. Reusable Mouthpiece: Includes a reusable, sterilizable mouthpiece. The device can be calibrated to ensure accuracy and allows for user profile setup (height, age, gender) to calculate results based on predicted values.