Measurement: Measures oxygen saturation in the blood, typically displayed as a percentage.
Heart Rate Measurement: Measures heart rate in beats per minute (bpm).
Non-Invasive: Uses a sensor clipped onto a finger, toe, or earlobe, making it painless and easy to use.
Portable: it is small, lightweight, and battery-powered, making it portable and convenient.
Alarms:  have adjustable alarms for low SpO2 or heart rate limits.
Display Screen: Shows SpO2, heart rate, and  other data like pulse strength or signal strength.
Data Storage:  can store readings for later review or tracking.