Features:
* Ultra-thin design for portable carrying, easy operation for convenient test. Large TFT screen to display the test result clearly.
* Measure FVC, PEF, FEV1, etc. parameters synchronously.
* Support diagnosis evidence by volume and flow rate chart display.
* With precise, credible test result,and good consistency.
* Built-in predicted value, display the testee 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, analyse trend and export.
* Built-in lithium battery, Battery power display. Automatic power-off when there is no operation in one minute.