The Basic Fingertip Pulse Oximiter by Prestige Medical provides quick and accurate fingertip measurement of Sp02% (Oxygen Saturation) and pulse. It features an LED display for low power consumption and includes an auto shut-off feature to provide up to 30 hours of continuous use. The lightweight and compact design is perfect for a nurse on the go. Packaging includes 2 AAA batteries, a soft silicone protective case and lanyard. Includes a Prestige Medical 1 year manufacturer's warranty.