Commodity Quality Certification: FDA, CE, ISO Application: Finger Tip Model Number: JPD-500 Display: High Resolution LED Power: 1.5V(AAA) battery Usage: SpO2, Pulse Rate Weight (without batteries): 40 g Application range: Adult, Adolescent, Child With a vastly improved OLED and sensor , it allows SpO2 (Blood Oxygen Saturation level ) and pulse rate measurement even at low blood perfusion. With alarm function will remind patients to notice Spo2 and PR value change, It can be used in monitoring oxygen therapy effect . Suitable for all ages -finger chamber with smatr spring system, accommodates wide range of finger sizes - children to adult 1. Spo2 value and waveform display 2. Pulse rate value and bar graph display 3. Tri-/ Bi- color OLED 4. Pulse rate beeping function 5. Spo2 over limits alarming function, 6. Pulse rate over limits alarming function 7. Low voltage alarming function 8. Auto shut-off after 10 seconds non-use. 9. Display in 8 modes and 4 directions.