08 ago Fingertip OLED Pulse Oximeter Oxygen Saturation SpO₂ Heart Rate Monitor 331
Pay attention to distinguish positive and negative poles! It doesn't fit finger if you wear wedding ring over size 10! Also if you have long nail will affect the result. Fingertip Pulse Oximeter: Dimension: 81mm*68mm*40mm Operating Environment: Temperature: 50°F-104°F Relative humidity: ≤75% Humidity: from 10%...