Pulse Oximeter, 4 Color OLED Display Oxygen Monitor Fingertip with 20 × Memory, Blood Oxygen Saturation Monitor (SpO2), Alarm & Brightness Adjustable, Batteries & Lanyard (White)

20 × MEMORY FUNCTION – Pulse oximeter with memory measurement 30s countdown automatic memory results. Finger oxygen monitor displays the latest 5 measurement results on startup, and you can access the settings to view a memory of 20 measurement results. O2 sensor’s good for you to keep track of your oxygen levels for 20 days
FASTER & MORE ACCURATE – Pulse oximeter fingertip utilizes advanced intelligent chips to ensure faster detection speed, and its dual light-blocking shield structure design effectively prevents interference from external light, ensuring highly accurate results
LARGER & BRIGHTER SCREEN – The oxygen saturation monitor features a 1.3″ TFT-OLED display with a protective cover that is larger than other 0.9″ screens, ensuring clear visibility for the elderly. The screen has high brightness and can be adjusted to 5 levels of brightness (default at level 5)