Tornado Slimline Black

Measures 2" x 1" x 1". As used in FIFA Internationals, F.A. & Champions League Matches FIMBRA & FINA Matches. Two high pitch frequencies for loudness close to the whistle and a lower pitch for distance all sound simultaneously. One piece durable black composition construction. Recommended for a big stadium or anywhere real power is required. Keyring attachment. Hang packaged.