Features:Touchscreen Spirometer and 3D Oximeter: 6MWT, Sleep Test, 24h SpO2 Holter.Detachable flowmeter heads to facilitate Oximetry Test during 6 Minute Walk Test.Two International Patents were granted for this product: Design Copywrite and Multifunctional capabilities.Wireless Real-Time Test also available on PC, via Bluetooth and USB.Lightweight and easy to carry on the go, with a long-life Rechargeable Battery.Unique feature: can be configured for both Doctor’s Office and Patient Home use.