Color LED display.
Oxygen saturation measurement range: 35-100%.
Heart rate measurement range: 30-240 BPM.
Power supply: Two 1.5V alkaline batteries (AAA).
Automatic shutdown after 5 seconds, when not in use.
Display: Graph Bar, Waveform, Battery Status.
2 cases included (silicone protective & zippered storage).
1 year warranty.
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