(Water proof, Dust proof)
Features
Support 6 display modes(include big font mode).
Light weight and easy to use. 
Color OLED simultaneously displays testing value and plethysmogram.
Adjust the parameters in friendly menu.
Manually adjust the direction of interface.
Low battery voltage indicator.
Automatically switch off while no signal.
Standard two AAA 1.5V alkaline batteries support more than 30 hours continuous use.
Advanced DSP algorithm inside decreases the influence of motion artificial and improves accuracy of low perfusion.
Water splash proof according to CE IPX4 requirement
Anti-movement, more stable. 

Specification:
Hemoglobin Saturation Display:35-100%
Pulse Rate Display: 30-250bpm
Power Consumption: Smaller than 30 mAh(normal)
Resolution:
Hemoglobin Saturation(Spo2): 1%
Pulse Rate: 1bpm
Measurement Accuracy:
Hemoglobin Saturation(SpO2): (70%-100%):2%; unspecified(<70%); pulse rate: 2bpm.
Measurement Performance in low perfusion condition:0.3%.

Hemoglobin saturation display: 35-100%
Pulse Rate Display: 30-250bpm
Power Consumption: Smaller than 30 mAh(normal)
Resolution:
Hemoglobin Saturation(Spo2): 1%
Pulse Rate: 1bpm
Measurement Accuracy:
Hemoglobin Saturation(SpO2): (70%-100%):2%; unspecified(<70%); pulse rate: 2bpm.
Measurement Performance in low perfusion condition:0.3%.