ADC Advantage 2200 Fingertip Pulse Oximeter with LED Display

A portable fingertip pulse oximeter ideally suited for home, sport, or aviation use. the 2200 features reads spo2 and pulse rate accuracy spo2 2 / hr 5 bpm 2 changeable display modes bright red led display fits fingers with a thickness of 8mm-20mm (0.31"-0.79") carry lanyard 2 "aaa" batteries instruction booklet 1 year limited warranty.