Evaluation of a Test Algorithm for Use to Analyze ECG Data Collected From a Test Device of a 24-hour Simulated Use Period

Inclusion Criteria: * Of the 150 subjects who complete the study, at least 60 (i.e., ≥ 40%) subjects must be male, and at least 60 (i.e., ≥ 40%) subjects must be female. * Subjects must be more than 18 years of age. * Subjects' body mass index (BMI) will be calculated based on their weight and height at the time of consent. BMI will be calculated using the CDC's online Adult BMI Calculator (https://www.cdc.gov/healthyweight/assessing/bmi/adult\_bmi/english\_bmi\_calculator/bmi\_calculator.html). This calculator will also automatically categorize the calculated BMI as underweight to healthy (\< 18.5 to 24.9), overweight (25.0 to 29.9), or obese (≥ 30.0). Of the 150 subjects who complete the study, no more than 70 subjects can be from a given BMI category. * Subjects must be able to read, write, and understand English. * Subjects must be in good general health (i.e., no current or recent severe illness). * Subjects must have a known condition of Atrial Fibrillation (AF), Tachycardia, Bradycardia, Premature Ventricular Contractions (PVC/VEB), and/or Premature Atrial Contractions (PAC) diagnosed by a medical professional. * Subjects with body hair on their upper-left chest must be willing to have the body hair clipped by a Testing Facility analyst before applying the Test Device. * Subjects must be willing to have their upper-left chest cleaned with 70% isopropanol preparation pads before applying the Test Device. Exclusion Criteria: * Subjects cannot be currently participatin…