Molten Dolfin F Referees Whistle With Whistle Lace - Black, size One Size

Powerful sound The rich, sharp, high-pitched tone of the DOLFIN F whistle reaches every corner of the pitch and overcomes the deafening roar of a football stadium Best for a smaller and quieter audience, standard volume (easy to blow) Flute string entails 124dB / 10 cm, 4.15 kHz & 3.67 kHz, 4 octaves