iRhythm Technologies, Inc. is a digital health care company, which creates solutions that detect, predict, and prevent disease. The Company designs, develops, and commercializes device-based technology to provide ambulatory cardiac monitoring services. It offers three Zio System options: the Zio Monitor System, the Zio XT System, and the Zio AT System. It offers its Zio ambulatory cardiac monitoring services, including long-term continuous monitoring, short-term continuous monitoring, and mobile cardiac telemetry (MCT) monitoring services (Zio Services), using its Zio Systems. The Zio Monitor System is a prescription-only, remote ECG monitoring system that consists of a patch ECG monitor (the Zio Monitor patch) that records the electric signal from the heart continuously for up to 14 days and the Zio ECG Utilization Software (ZEUS) System, which supports the capture and analysis of ECG data recorded by the Zio Monitor patch at the end of the wear period.