Zircadia

Zircadia operates in the sleep research and neurotechnology market, with a product focused on in-ear physiological signal collection rather than a general-purpose consumer sleep wearable. Its described differentiators are reusable soft electrodes, multiple fit sizes, support for wet or dry recording, and compatibility with more than 40 EEG-capable OEM systems through standard touchproof leads. The four-lead configuration is intended to capture EEG, EOG, EMG, and heart-rate signals, while the company’s stated performance measures include sleep/wake accuracy above 95% and five-stage scoring accuracy above 80% across 41 nights assessed against simultaneous polysomnography. Zircadia also offers research workflow assistance, from protocol design through scoring, which extends its offering beyond hardware. The system is identified as research use only and is not FDA cleared for clinical use, an important distinction from products marketed for clinical diagnosis or treatment. Funding stage and company scale are also unknown, limiting assessment of its relative commercial reach.

There are no funding rounds, valuation details, hiring announcements, employee-growth figures, or dated product launches available to identify financing or expansion inflection points. The described product combines reusable in-ear electrodes with a four-lead recording setup for EEG, EOG, EMG, and heart-rate signals, and is designed to work with existing EEG-capable equipment. Compatibility with more than 40 OEM systems could reduce the need for research teams to replace their recording infrastructure, while support for protocol planning, integration, troubleshooting, and scoring indicates a service component alongside the hardware. The performance figures provided—above 95% sleep/wake accuracy and above 80% five-stage scoring accuracy across 41 nights compared with simultaneous polysomnography—offer specific research context, but do not by themselves indicate adoption, validation at broader scale, or revenue growth. The product is for research use only and is not FDA cleared for clinical use.