Erling Haaland was spotted wearing a special device on his arm during the game—and it’s not just for style.
That device is most likely a performance armband / fitness tracker, used by elite players to monitor their body in real-time.
What it actually does:
Tracks heart rate and intensity
Measures physical load & fatigue
Helps staff analyze performance and recovery
These armband monitors are commonly used in high-level sports to collect biometric data during matches and training, giving players an edge in endurance and efficiency.
