• 0.96" dual-color OLED display(blue and yellow).
• Display of SpO2, PR, bar graph and pulse waveform.
• Four directions and six display modes.
• Adjustable brightness .
• Low battery indication.
• Automatic power off when the finger leaves the device for 5s.
• Display mode can be saved after power off.
• Optional enclosure color.
• Power Supply: two “AAA” batteries.
• Continuous working time: 20h.