?PULSE OXIMETER WELFARE PACKAGE?1 X pulse oximeter, 1 X multilingual instruction manual, 1 X warranty card, 2 X AAA batteries, a lanyard for your convenience. If you have any questions, please feel free to contact us. ?ACCURATE MEASUREMENT?Oxygen monitor provides you with accurate measurement of oxygen content (SpO2), pulse rate, pulse strength, and pulse waveform. The large OLED screen makes it easy for you to read. ?ONE CLICK OPERATION?To use the blood oxygen monitor, simply place your finger in pulse oximeter and press the button to turn it on. The finger silica gel oximeter with the smart spring system is suitable for different finger sizes. ?ABNORMAL MEASUREMENT WARNING?The value on the screen will flash if an abnormal Blood oxygen saturation or heart rate is detected on oxygen monitor finger adults. A reminder for your loved ones and you. ?FREE APP FOR ANDROID AND iOS?The pulse oximeter configuration bluetooth connectivity APP "ViHealth". App records and stores a reading for up to 10 hours continuously at a time. You also can see real-time data and graphical reports for the trends of SpO2 and heart rate.