Features 1 Two color 0 96 inch OLED display2 Small quality light weight easy to carry out4 Battery low indicator5 Have blood oxygen pulse bar graph pulse waveform display6 Press the button for 3 seconds to enter the operation menu for function setting 7 Manual brightness adjustment function can adapt to different environments8 No signal 8 seconds auto power off function to save power9 With buzzer sound can be set to open and close10 The internal finger contact part is made of silicone and feels comfortable Specification BrandBOXYM ModelYK 80X Material ABSColor Blue Yellow Green PinkWeight 54gSize 62 x 32 x 33 mmProduct ParametersPower Supply2 x 1 5V AAA Battery Not Included DisplayHD Two Color OLED ScreenOxygen SaturationMeasurement Range 70 To 99 Measurement Accuracy ±2 Within The Range Of 80 To 99 70 To 79 Within The Range Of ± 3 70 Or Less Is Not RequiredResolution Blood Oxygen Saturation ± 1 Use EnvironmentOperating Temperature 5 ° C 40 ° CStorage Temperature 10 ° C 40 ° CAmbient Humidity 15 To 80 When Working 10 To 80 StorageAtmospheric Pressure 86kpa 106kpaMeasurement MethodNon invasive continuous detection of arterial oxygen saturation and pulse rateClose Mode8 seconds without operation automatic shutdownPulse RateMeasuring Range 30BPM 240BPMMeasurement Accuracy ±1BPM or ±1 Of The Measured Value Larger Value Power ConsumptionLess Than 30maPackage Includes 1 x Finger Clamp Pulse Oximeter1 x Lanyard 1 x User Man