Vital Signs Research Group is looking for parents with children between 19-60 months old to participate in a research study. We are testing an investigational pulse oximeter which monitors heart rate and blood oxygen levels non-invasively. This study will take place at 650 5th Street San Francisco, CA 94107 and will take about 1-2 hours. Your child will wear the pulse oximeter(s) while sitting quietly with their parent guardian present. You will be compensated $100 for your time. Please contact recruitment@vitalsignsresearchgroup.com for more information.