1. Internet of Things (IoT): A vision, architectural elements, and future directions
2. Number of Connected Wearable Devices Worldwide from 2016 to 2021 (in Millions)https://www.statista.com/
3. Wearable Device Sales Revenue Worldwide from 2015 to 2021 (in Billion U.S. Dollars)https://www.statista.com/
4. Global Wearable Medical Devices Market—Growth, Trends and Forecasts (2017–2022)https://www.mordorintelligence.com/
5. Polar M430https://www.polar.com/us-en