EDA stands for electrodermal activity, also known as the galvanic skin response. It measures changes in skin electrical conductance caused by eccrine sweat glands activated by the sympathetic nervous system, making it a direct marker of emotional and cognitive arousal rather than physical exertion.

Does Whoop have EDA sensing?

No. Whoop does not currently include an EDA sensor. Google/Fitbit is the only major wearable brand to have implemented EDA at consumer scale, in the Sense, Sense 2 and Pixel Watch 4.

Could EDA and ECG share the same sensor on Cirqa?

Possibly. Both EDA and ECG require direct electrical contact with the skin, and published research has confirmed that the same electrodes can serve both functions in a single wearable. Garmin already uses skin-contact electrodes for ECG on the Fenix 8. A band format with inner-surface contacts could plausibly handle both modalities. This is inference, not a confirmed specification.

What do the trademark filings confirm about Cirqa?

They confirm Garmin is actively extending trademark protection across multiple jurisdictions: US (February 2026), Canada (June 19, 2026), and the UK (June 23, 2026). All three carry identical goods descriptions. The filings confirm the product was commercially defined by at least February 25, 2026. They do not confirm a launch date or final hardware specification.

Is EDA confirmed for Garmin Cirqa?

No. The inference comes from the goods description in the trademark filing, which distinguishes between physical and emotional stress sensing in a way that Garmin’s existing HRV-based metrics do not support. It is a reasonable inference from the language, not a confirmed specification.