The PC-50 is an easy to use, all in one Possession Control Whistle. This patented new whistle utilizes two raised "snap & click" buttons that are at eye level and color coded for the home and away teams. These buttons give the official a clear view of which team has possession eliminating any confusion for the next possession call. Comes with anti microbial mouthpiece. The whistles ARE assembled in the USA. Available in Pink and Black.