This device helps prevent sudden death from an abnormal heartbeat

The HWD is worn outside the body rather than implanted in the chest, and continuously monitors the patient’s heart with adhesive electrodes. — Hospital Serdang

We've all heard about sudden cardiac arrests occurring among superfit elite athletes, especially footballers.

Just last week (December 2021), Algerian footballer Sofiane Loukar died after colliding with his goalkeeper during a match.