Salient Features of iHealth PO3 Pulse Oximeter:iHealth PO3 Pulse Oximeter measure, track, and share user's blood oxygen level, pulse rate, and perfusion index right from your touchscreen.This Smart design uses the stealth app to record and save user's data to secure ihealth account.Trusted by doctors and FDA approved the Stealth pulse oximeter gives fast, accurate vitals signs readings right from your Smartphone or tablet.For meaningful results user can track over time.User can store up to 200 readings on the oximeter and send them to his account at his convenience.