Laws of the Game
5. Referee's equipment
Referees must have the following equipment:
· Red and yellow cards
Notebook (or other means of keeping a record of the match)
Referees may be permitted to use:
· Equipment for communicating with other match officials – buzzer/beep flags, headsets etc.
· EPTS or other fitness monitoring equipment
Referees and other ‘on-field’ match officials are prohibited from wearing jewellery or any other electronic equipment, including cameras.