• Observe the battery diagram on the product; each battery must be placed in the opposite direction for proper operation. • Fingertip oximeter with precise SpO2 value detection, ideal for families, seniors, children, and athletes. • SpO2 measurement range: 35 - 100%. • Allows quick measurements in less than 10 seconds by placing your finger on the sensor. • Immediate and clear results on the LED screen, even in low light conditions. • The oximeter displays a bar graph, SpO2 values, and pulse rate on the screen. • Includes a carrying strap for added convenience. • Low energy consumption thanks to automatic shut-off after 10 seconds of inactivity. • Operates with 2 AAA batteries (not included), providing more than 30 hours of continuous use.