- Measure SpO2 and PR accurately - LED display for SpO2 value and PR value， bargraph display - Low battery voltage indicator - Automatic power off when signal is not available for 4 seconds - 2 AAA batteries support 30 hours continuously - Mini size， light weight， convenient to carry - Widely used in hospital， home healthcare， oxygen bar， community medical centre， alpine area， sports healthcare etc. Measure SpO2 and PR accurately