Key Features: Monitor Blood Oxygen Saturation (spo2) Monitor Pulse & Blood Flow (pi%) Non-invasive Finger Scan Dual-color Oled Display Accurately And Quickly Monitor Your Blood & Circulation With The Deluxe Pulse Oximeter Blood Oxygen Level Monitor From Contec This Pulse Oximeter Is Engineered To Give You Fast Measurements Of The Oxygen Saturation Of Your Blood (spo2) Your Pulse Rate And The Strength Of Your Blood Flow (perfusion Index) It's An Ideal Instrument For Use During And After Workouts To Determine Their Effectiveness As Well As At Any Time During An Illness To Monitor Vital Statistics The Device Is Small Portable And Measures These Attributes With A Simple Non-intrusive Finger Scan It Can Accommodate A Wide Range Of Finger Sizes And Displays Data On A Vibrant Dual-color Oled Display Additional Features: Adjustable Display Brightness Six Display Modes Low Battery Indicator Automatic Shutoff To Preserve Battery Life Runs On Only Two Aaa Batteries (included) Adjustable Neck Strap With Quick Release Lanyard Constructed From Latex-free Materials Fda Approved