UserFriendly Design This substitution board is easy to operate with no batteries or additional devices required. It is ready to use on the sideline, enabling quick and clear substitutions without setup time. Versatile Application Designed for football (soccer) matches and suitable for any sport that uses a substitution board. Works with standard signaling practices and helps manage changes efficiently across different sports. Durable Construction Built with quality materials for a sturdy, longlasting performance. The durable build is designed to withstand regular sideline use and movement during games and practices. DoubleSided Display Features a doublesided display for clear visibility to the referee from multiple angles. This design helps ensure substitutions are easy to read from both sides of the field. Use scenarios Soccer match: Referees and staff can quickly signal entering and leaving players without interrupting play. Training session: Coaches coordinate player changes smoothly during drills and scrimmages. Amateur tournament: Officials and teams rely on a clear, fast substitution signal to maintain flow and fairness on the sidelines.