Digital Pulse Oximeter Finger SpO2 Heart Rate Monitor Good Condition Fast P&P

SpO2 Accuracy: ± 2% (within 70% - 100% range). Pulse Rate (PR) Range: 30 - 250 BPM (Resolution 1 BPM). Pulse Rate Accuracy: ± 2 BPM. OLED Display: Bright, multi-color OLED screen with adjustable brightness levels and PLETH wave visualization.