... column diagram of stroll 4 directions, 8 display Finger Pulse Oximeter Function:1,Monitoring pulse, SpO2,PR(Pulse Rate).2,Displaying ... .3, 4 directions, 8 display. Description:1,Display Method: Color OLED display, two display directions.2,The product is small in ... be used before or after sports .Specification:Display 64K color OLED SpO2 Measurement range: 35~99% Resolution: ± 1% Accuracy: ± 2% (70 ...