Come and see our amazing products. You just need to clipping the child pulse oximeter on the finger, press power botton wait 8s, (NOTE: When you measure, Your finger and body do not tremble during measuring. Pls keep still, avoid measurement failure ).the SpO2 and pulse rate measurement value will show on the OLED display, Automatically turn into the sleep mode in 10s without the opperation.This finger pulse oximeter fits for kids 2.5-15 years old, and is not designed for newborns and infants. The fingertip pulse oximeter made of soft silicone, makes it more comfortable and prevents allergies. It is small in size and compact, allows you to bring the spo2 oximeter even when you are going out or traveling.Custom LOGO is available . Pls confirm further with us if any query about packing info, inventory status and time schedule.