After successful completion of this training you will receive an official GWO First Aid Refresher certificate. The obtained certificate is also registered in WINDA, the online database for GWO training courses. In this database you will find all your obtained GWO certificates.
This certificate and the WINDA registration are valid for 2 years and must be refreshed every two years. You can do this by (again) following the GWO refresher training(s).