Pulse oximeters are small and portable devices, making them convenient for use at home or on the go. Pulse oximeters feature a digital display that shows oxygen saturation levels and pulse rate in an easy-to-read format. Modern pulse oximeters are designed to provide accurate and reliable readings, but proper usage following manufacturer guidelines is essential for precise results. Most pulse oximeters are powered by batteries, ensuring portability and allowing for use without relying on electrical outlets. To conserve battery life, many pulse oximeters include an auto-off feature that turns off the device after a period of inactivity.