This short presentation tells the story behind the Maquet 6670600/6670680 permanent oxygen sensor and its intended use cases. Watch a close-up walkthrough of this OEM ultrasonic O2 sensor for SERVO-i and SERVO-s ventilators, including how it differs from disposable galvanic cells, how it fits into the inspiratory gas pathway, and what biomedical teams should know about the 6670600 field upgrade versus the 6670680 factory-fit version. Ideal for ICU, NICU, OR, transport, and respiratory care professionals evaluating long-term oxygen monitoring.