The BPL Smart Oxy JR is a children's pulse oximeter designed for ages 3–12 to measure blood oxygen saturation (\(SpO_{2}\)) and pulse rate (PR). Its uses include monitoring respiratory health, assessing how well lungs are handling activity, and checking oxygen levels for conditions like asthma or pneumonia, especially in young patients. The device features a child-friendly design, an accurate display with adjustable brightness, and the ability to detect motion and low perfusion to provide reliable readings even when the child is moving.