According to the British press, Mohamed Salah wore a “smart bracelet”, which is a specialized sensor manufactured by the American company Whoop. The device Salah used against Manchester City last Saturday is the latest and most accurate for daily monitoring of many health and vital signs such as heartbeat and respiration. The device contains many features that help measure the monitoring of blood oxygen levels, reading the temperature of the skin and the level of stress in the body, as well as whether it needs to recover or not.