PRODUCT QUALITY GUARANTEED: Each product goes through rigorous testing to ensure you get the best digital pulse oximeter possible. Excellent customer service will help you address any problems. INNOVATIVE NEW FEATURES: A pulse oximeter perfusion index helps you better ensure accurate results and understand the results you are reading. Adjustable brightness, 6 rotatable directions, and customizable alarms help you get the most out of your oximeter. CONVENIENT PORTABLE DESIGN: Designed to come with you, this digital finger pulse oximeter includes an easy-to-wear lanyard. Take your oximeter with you wherever you go or just when you need it to help you make good decisions. MONITOR BLOOD OXYGEN SATURATION: Your SpO2 levels, or blood oxygen saturation levels, help you better understand how much oxygen the cells in your body are getting. When levels drop too low, know right away with a digital finger pulse oximeter. EASY TO READ, ACCURATE RESULTS: The Digital Pulse Oximeter can be operated with one button and provides results in seconds. It’s a great tool for athletes, pilots, seniors, and adventurers. A large LED screen makes reading results easy, and SpO2 and BPM results accurate +/- 2%.