The SpirOx is a hand-held spirometer with a TFT color display and an ultra-thin design for portability. The screen is large and displays information about test results clearly. It measures PEF, FVC, FEV1, and parameters synchronously, and supports diagnosis evidence by a flow rate chart display and volume. The tests are performed with precision and good consistency. Good communication with the computer via USB and Bluetooth can be expected with the SpirOx. During testing, the current condition is displayed by green, red, and yellow bars. It memorizes correlative data concerning data, testing results, and analysis. Additional features include a built-in lithium battery and automatic power-off after one minute of inactivity. The spirometer is also easy to operate.