Properties: The whistle of every professional handball referee from the brand: Molten, model Vorca RA0900-KS. Recognized as the official whistle by the IHF (International Handball Federation). Before being released for distribution, the whistle was tested numerous times to find the right combination of tone, resonance, quality and durability. The whistle has a very strong, thick, sharp sound and a high tone of 125dB/10cm, 4.10kHz and 3.74kHz, 4 octaves. The whistle comes with a revolutionary grip (two sizes) for holding between the fingers. This is a very useful tool during dynamic games where the referee must move quickly to control the game. This model is intended for games and sporting events taking place in a room with a very large and loud audience. The whistle comes in a stylish box, making it an elegant, unique and functional gift for any refereeing enthusiast who appreciates the highest quality and unique style. The set includes: Professional whistle Handles (flip grip) in two sizes.