Display of pulse waveform. External SpO2 probe can be connected. A SpO2 probe. A user manual. Power consumption: ≤ 100 mA. Accuracy under low perfusion: low perfusion 0.4 %, SpO2 accuracy: ± 4 %; PR accuracy: ± 2 bpm or ± 2 %, whichever is greater.
eBay