Get your hands on thisfinger pulse oximeter with led displayr check your blood oxygen saturation sp02 and monitor changes in blood volumer simply clip onto your finger and track your resultsr measurement range of 70 99r device also tracks pulse rate on the 11 colour oled displayr results are simplified and easy to read on the bright 96x64 resolutionr compact lightweight design is ideal for tracking on the gor requires 2 x aaa batteries not includedr si