Fingertip Pulse Oximeter - Accurate Heart Rate Blood Oxygen Saturation Monitoring Health Features: Size: 58mm34mm35mm Colors: White, Black Automatic 4-directions screen rotation Light weight and easy to operate OLED screen color, SpO2 waveform Accuracy ±4% or even low perfusion below 0.1% 20’s idling after device shuts down automatically Use 2 AA batteries The products are suitable for home medicine, hospitals (including internal medicine, surgery, anesthesia, intensive care, etc.), oxygen bars, community medical centers, sports, etc. The screen is made of two-color OLED material, with dual-value display of blood oxygen and pulse, pulse waveform and shape graph display. The product has low power consumption and is suitable for long-term use. When the battery voltage is low, there is a warning display. A finger pulse oximeter is an affordable and accurate way to detect pulse rate and oxygen saturation through the finger. Self-adjusting finger clips and simple one-touch design