Note: at least once per month; individuals of 18+ age, who wear a single-purpose wristworn electronic device with limited functionality solely used for tracking health and fitness activities such as steps taken, heart rate, distance, speed, calories burned etc; some fitness bands synchronise with your phone to display incoming texts, calls and emails, but this is not its primary purpose
Methodology: Estimates are based on the analysis of survey and traffic data from research firms and regulatory agencies, sales projections, historical trends, company-specific data, and demographic and socioeconomic factors.