Non Invasive for Oxygen Meter: Equipped with a high-performance accelerometer, the sporty Non Invasive for Oxygen Meter meter sense body movement, ensuring high- and reliable data. Quick and Easy Testing: Just insert your finger into the sensor, and the results appear on the OLED screen in seconds. Its user-friendly design makes it perfect for on-the-go health monitoring. Name:Oximeter Type:LED Finger clip Oximeter SpO2 measurement range: 5%-99% SpO2 accuracy: +1% in the range of 90%-99%, +2% in the range of 70%-89%, SpO2 range: Consistent with the display range, the set step length is 1% Pulse rate range: 30 bpm-250 bpm Pulse rate accuracy: ±1 bpm Pulse rate range: Consistent with the display range, the set step length is 5 bpm Data update cycle: 0.25s-2s SpO2 PR average: 8s Pulse rate sound: PR tone wavelength range: 500nm-100nm Maximum optical output power: 150mW Pulse rate display: Numeric Display: OLED Power dissipation: in normal measurement, less than 10mA, in power off state, less than 50uA Battery: 2 xAAA alkaline dry batteries (not included) Colour:Black & White Material:plastic Package Contents: 1 x Oximeter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.