Blood pressure

Wikipedia

Lots of devices offered at your local pharmacy but they do not measure continuously and rarely export data. Devices that can measure it continuously:

Contec ABPM - Bulky Medical Device Affordable

Smart Bands may be able to do it using Pulse Wave Velocity which measures the time between ECG pulse and Pulse oximetry.

Fitbit Sense

Lots of no brand bands offer this on Amazon.

Withings Scale maybe.