You are looking at EasyOne Pro Spirometer (Portable DLCO, Lung Volumes and Spirometry) - Device Only from Ndd Medical. EasyOne Pro provides the most efficient and accurate way to test lung function in any setting. Engineered using our patented TrueFlow and TrueCheck technology, the EasyOne Pro eliminates all sources of error, saves time and gives your patients the best pulmonary care in your practice or lung function lab. No need for a Body Box. Patient and User Centered Design: The EasyOne Pro is both patient-friendly and easy to maintain. Simply switch on the device and begin testing immediately. Medical professionals can perform annual maintenance themselves in only 10 minutes. Calibration-free TrueFlow Technology: Extremely robust and accurate flow results are delivered without the need for calibration thanks to our TrueFlow technology. Self-Quality Control through TrueCheck Technology: Spend more time on patient care. TrueCheck ensures that each DLCO trial is accurate and validated without calibration and warm-up time. Compact and Lightweight Design: Weighing only 18 pounds, the EasyOne Pro is compact and durable – without compromising quality. It easily fits in any office setting.