Hand-held Spirometer for examining lung function. SpirOx is fit for hospitals, Clinique, family for the ordinary test. It?s requested that the user operates it according to the user manual, and doesn?t need to carry on specialized training.?DescriptionColor TFT DisplayUltra-thin design for portable carrying, easy operation for a convenient test.Large TFT screen to display the test result clearly.Measure FVC, PEF, FEV1 etc, and parameters synchronously.Peak?expiatory?flow (PEF), 25% flow of the FVC (FEF25), 75% flow of the FVC (FEF75) and average flow between 25% and 75% of the FVC (FEF2575).Support diagnosis evidence by volume and flow rate chart display.With precise, credible test result and good consistency.Built-in predicted value, display the tested current condition by red, yellow and green bar.Provide repeated measure and memorize the correlative data.Communication with the computer with the USB (or Bluetooth), which can calculate data, analyze trend and export.Built-in lithium battery, battery power display.Automatic power-off when there is no operation in one minute.