First, participants will wear the FDA-cleared device for 15 minutes while sitting quietly. Then, the FDA-cleared device will be removed and the participants will wear the WCD for 15 minutes while sitting quietly. Next, while wearing the WCD, participants will perform various activities of daily living, including at least 6 hours of overnight wear. Finally, the WCD will be removed and the participants will wear the FDA-cleared again for 15 minutes while sitting quietly.