Nonin TruO2 OTC Pulse Oximeter 3250

From the brand

ACCURATE ACROSS SKIN TONES & LOW PERFUSION: TruO2 OTC delivers accurate SpO2 readings across skin tones (1) and in low circulation or with cold-fingers using Nonin’s PureSAT technology
FDA-CLEARED FOR OVER-THE-COUNTER HOME USE: Medical-grade pulse oximeter cleared by the FDA for over-the-counter (OTC) use with no prescription required. Built with the same technology used by clinicians, hospitals, and the military
INVENTORS OF THE FINGERTIP PULSE OXIMETER: Founded by the original inventors of the fingertip pulse oximeter, Nonin delivers accuracy for a broad range of patients and health conditions (1)
SMART, EASY-TO-USE DESIGN: Bright, easy-to-read LED display with automatic on/off. Nonin CorrectCheck instantly alerts you if your finger is not positioned correctly to provide high-quality measurements
WIRELESS DATA SHARING & LONG BATTERY LIFE: Secure Bluetooth connectivity to compatible iOS devices. Save and share readings with Apple Health or email history using the NoninConnect app. Up to 2,200 spot checks on two included AAA batteries (4). Made in USA. 2-year warranty