The MQ3200 View SpO2 Finger Tip Pulse Oximeter helps in monitoring pulse rate and O2 accurately. The Key features are: 1. Dual color HIGH RESOLUTION 2. Easy to Read OLED display. 3. Display SpO2, Pulse Rate , 4. Features Pulse Bar and Plethysmograph. 5. Multidirectional (Six) display modes for easy reading from all sides. 6. Automatic power off with battery-low indicator. 7. Normal battery operation is approximately thirty hours. 8. Supports 2 AAA alkaline or rechargeable batteries. 9. Ten adjustable brightness settings. 10. Accommodates wide range of finger sizes from pediatric to adult. 11. Sturdy lightweight design ( total 0.06 lbs without batteries ). 12. Two year warranty.