A fingertip pulse oximeter is a small, portable medical device used to measure blood oxygen saturation (SpO2) and pulse rate quickly and accurately. It clips onto the fingertip and uses light sensors to provide instant digital readings on a clear display. Designed for ease of use, it features one-button operation, a compact design, and low power consumption, often powered by standard batteries. Ideal for home use, clinics, and sports monitoring, it is useful for tracking respiratory health in adults and children.