Data Collection Study Using CS BP Pillow System

Inclusion Criteria: * 40-80 years old. * Ability and willingness to sign and understand an informed consent form. * The participant has a palpable radial pulse in both wrists. * The participant is willing and able to be fitted with the investigational device, A-line, and reference cuff, and is willing and able to undergo all study procedures, including 1 hour of recording with the investigational device and A-line. Exclusion Criteria: * Participant who are currently enrolled in another clinical investigation in which the intervention might compromise the safety of the participant or interfere with the data collected. * Participant whose body habitus precludes them from wearing the investigational device on their wrist. * Female participants who self-reported as pregnant based on a urine pregnancy test, or who are self-reported as trying to get pregnant or who are breastfeeding. * Participant whose BMI is greater than 35. * Participant with a documented medical history of cardiac arrhythmia. * Participant with diagnosed diabetes mellitus. * Participant with implanted cardiac defibrillators or pacemakers, Ventricular Assist Device (VAD) or other mechanical circulatory support devices, whether intracorporal or extracorporeal. * Participant with stage 4 or stage 5 end-stage renal disease, or participants with arteriovenous shunts. * Participant with pheochromocytoma or primary hyperaldosteronism. * Participant with diagnosed heart failure with New York Heart Association (NYHA)…