Well-known clicker for eponymous training of dogs, horses and other animals. Made of metal for long-lasting use. Originally developed as a children's toy, this clicker was used by the Allied Forces on June 6, 1944 (D-Day) to identify themselves to their own armed forces by its typical sound. Each version comes in a nostalgic box and a certificate of authenticity is included. > polished brass > 4.9 x 2.4 x 1.5 cm