Molten Vorca handball whistle black RA0090-KS Molten whistle with a very strong, thick and sharp sound and high pitch. Used by professional handball referees. Before release for distribution, the whistle was tested multiple times in order to find the suitable combination tone, resonance, quality and resistance. For The whistle has two handles in different sizes, which make fastening between the fingers easier. The whole packed in a tasteful box.\nbsp;Technical data:· 125dB /10cm, 4.10kHz i 3.74kHz, 4 octave recognized official whistle by IHF (International Handball Federation) · the set includes: 1 whistle and handles (flip grip) in two sizes