Accurate And Reliable: Pulse Oximeter Can Accurately Measure Your Spo2 (Blood Oxygen Saturation Level), Pulse Rate, Perfusion Index, And Pulse Strength With In 5 Seconds | | Lightweight And Portable: The Fingertip Pulse Oximeter Is Highly Compact, Lightweight, And Has Low Power Consumption, Making It Convenient To Carry Anywhere, Additionally, It Comes With A Detachable Lanyard, Allowing You To Measure Your Blood Oxygen Saturation Anywhere | | Easy To Use: This Blood Oxygen Monitor Use One-Button Operation And Automatic Shutdown Within 10 Seconds Without Any Further Action Required, The Oximeter Is Made Of Abs Material, And The Fingertip Clip Is Made Of Silicone Material, Which Is Soft And Easy To Use. The Blood Oxygen Monitor Comes With A Lanyard For Easy Portability | | 2 Aaa Batteries Power Supply Design: 2 Aaa Batteries Power Supply, You Can Also Use The Batteries To Supply Power At Any Time Anywhere, Which Is Convenient And Fast, This Oxygen Level Monitor Are.