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)VISUAL DATA PRESENTATION - Blood oxygen meter finger provides correct real time readings of oxygen saturation level (SpO2), pulse rate per minute (PR), pulse strength level (PI), pulse fluctuation indicator, pulse indicator, pulse audio indicator on/off and battery level. Pulse ox will automatically turns off after 8s when your finger is out to conserve battery lifeCOMFORTABLE & SOFT MATERIAL - O2 sat monitor finger for oxygen built-in soft silicone material. When you insert your finger into the measurement, snug but not too tight, the soft and flexible nature of silicone material allows for a comfortable fit on the finger, promoting accurate readings. The oximeter finger with pulse is perfect for both adults and kids (6+)HOW TO ACCESS SETTINGS & SETUP - YM301 model pulse oximeter is most user-friendly. After pressing the oxygen monitor fingertip button to turn it on, long press the 2s button to enter the setting page, important note: long press for 2s to enter the next page or make settings; Short press to next itemPACKAGE CONTENT & TIPS - The package includes a pulse oximeter. Accessories: two batteries, a lanyard, quick start guide, and user manual. Alecaremed pulse oximeter work accurately on darker skin tones as well as lighter ones. Please refer to the positive and negative indicators for correct battery installation