Special design for children
Comfortable for wearing
Low power and finger-out alarm
Rechargable button lithium battery

SPO2:

Measurement Range:0~100%
Resolution:1%
 Accuracy:70~100%,±2%;0~69%,unspecified
 Alarm Range:0~100%(merely applied to pulse oximeter with alarm function)

Pulse Rate

 Measurement Range:25~250bpm
 Resolution:1bpm
 Accuracy:±2 bpm or±2% (select larger)
 Alarm Range:0~254bpm(merely applied to pulse oximeter with alarm function)