The Apple Beddit 3 Sleep Monitor is a thin, flexible sensor strip placed under the bed sheet that tracks sleep duration, heart rate, respiration, snoring, and sleep environment metrics (room temperature and humidity) automatically throughout the night; it connects directly to a computer or compatible device via USB‑A for power and data, works with the Beddit app to provide insights into sleep quality and patterns, and requires no wearable device — making sleep tracking effortless and non‑intrusive.