FOUR STAR Fingertip Pulse Oximeter LK 87 OLED display Pulse Oximeter  (Multicolor)

The bright OLED display allows use in any environment - from dark surrounding to bright sunlight. || Portable and Lightweight: The small size of the oximeter makes it easy for you to carry around in your everyday life. || How to ensure the accuracy of your measurement? || 1. Moving too fast will affect the accuracy; try to stay still while waiting for your reading. || 2.When the oxygen saturator and the heart are at the same level, the measurement results are optimal. || 3. Avoid nail polish or long nails on the finger used for the reading. Fingers should not be wet at all either. || 4. Ring finger, middle finger and index finger are recommended as suitable monitor position Specifications