Finger Pulse Oximeter Monitoring Apparatus Oxygen Machine
                  | Display |        TFT color display |       
             | Blood oxygen saturation measurement range |         70%-99% |       
             | Oxygen saturation measurement accuracy |        70%-99% range of Plus or minus 2%, more than or equal to 70% is not defined |       
             | Blood oxygen saturation resolution |        blood oxygen saturation of Plus or minus 1% |       
             | Automatic shutdown |        8 seconds automatic shutdown when no finger is inserted |       
             | Storage humidity |        15%-80% when working, 10%-80% storage |       
             | Battery model |        2 x 1.5V (2 AAA alkaline, product does not contain batteries) |       
             | Pulse rate measurement range |        30BPM-240BPM. |       
             | Pulse rate measurement accuracy |        Plus or minus 1BPM or measurement of Plus or minus 1% (take larger value) |