Product Details Portable. Spot-check monitoring. SpO2: Blood oxygen. BPM: Heart rate. Features: Accurate measurements; one-button operation; easy application; comfortable fingertip grip; automatic shut-off; batteries included; lanyard included; one-year limited warranty. Complete with fingertip Pulse Oximeter, lanyard with quick-release attachment, 2 AAA batteries and English/Spanish instruction manual. Essential to Care since 1979. 100% money back guarantee. One-year limited warranty. All Leader brand products have a 100% money back guarantee. Return to place of purchase if not satisfied. www.myleader.com. Made in China.