Specifications -

SpO2

• Measurement Range 35-100%
• Resolution 1%
• Measurement Accuracy ±3%(70-100%) unspecified(Below 70%)
• Alarm Range 50-100%

Pulse Rate

• Measurement Range 30-250 BPM
• Resolution 1BPM
• Measurement Accuracy ±2 BPM
• Alarm Range 30-250 BPM

PI

• Display 0-20%
• Resolution 0.1%

Requires 2xAAA 1.5v alkaline battery