Step and Walking Pattern From Cardiac Monitor Study

• Subject is 18 years or older
• Willing and capable to provide written informed consent and agrees to participate in all protocol required activities
• Subjects must meet one of the following criteria:
• Documented New York Heart Association (NYHA) class II or III heart failure within the last 6 months

OR

• Subjects that have a known heart condition (non-heart failure) and are at risk of developing an abnormal heart rhythm, or have symptoms that may suggest a cardiac arrhythmia such as dizziness, palpitations, syncope, chest pain and/or shortness of breath

Exclusion Criteria:

• Not able to walk continuously for a period of 6 minutes at the subjects baseline walking speed
• Prior hospitalization or surgery that affects the subjects baseline walking speed at time of enrollment
• Cardiovascular event such as unstable angina or myocardial infarction that affects the subjects baseline walking speed at time of enrollment
• Subject is currently enrolled in another clinical trial (excluding registries) that may interfere with the placement of the study system
• Known allergy to materials used in the study (adhesive tape, titanium, ECG electrodes)
• Subject is pregnant as indicated by subject report and/or medical record at the time of enrollment
• Subjects with rash or open wound on torso locations where investigational devices will be placed
• Have an active implantable device
• Any past or current medical event that could represent a risk for the subject to perform the study required activities in the opinion of the investigator
• Any medical signs or symptoms that in the opinion of the investigator could represent a risk for the subject (I.e. increased baseline blood pressure or heart rate).