Feature: 1.Compact and portable design; 2.Numeric display with plrthysmogram display; 3. 1.77 inch color TFT LCD in real time display, displayable in big front and big screen; 4. Adjustable audio and visual alarm; 5. Built-in Li-ion Battery for up to 8 hours continuous working Specifications: * Parameter: SPO2, Pulse rate * SPO2 range: range: 0-100% Resolution: 1% Accuracy: �±2% at 70-99% 0-69%: unspecified * Pulse rate: Range: 30bpm~250bpm Resolution: 1 bpm; Accuracy: �±2% at 30bpm~250bpm
