Molten Dolfin Pro WDFPBK Whistle, for Basketball, Football and Indoor Sports, Powerful Sound, Adjustable Lanyard

The Molten Dolfin Pro WDFPBK is a professional whistle developed for referees in basketball, football and other indoor sports, where the acoustic signal must be strong, clear and instantly recognizable. It produces one of the most powerful and sharpest sounds in its category, reaching 124 dB at 10 cm, with high-frequency tones designed to cut through crowd noise, fast game rhythms and the echo of large sports halls.

The sound is thick, crisp and reacts instantly to airflow. The calibrated frequencies of 4.10 kHz and 3.74 kHz ensure immediate player response, making the whistle reliable during intense match situations. The short, defined echo helps deliver a clean acoustic signal without blending into other sounds in the arena.

The whistle is built from reinforced polycarbonate, with a central vertical support that stabilizes the body and maintains acoustic precision even after extended use. Its shape is inspired by the silhouette of a dolphin, a design awarded with the Good Design Award. The upper and lower acoustic fins direct airflow to generate a full and consistent vibration.

Ergonomics play a key role: the slim body is comfortable to hold, easy to grip and suitable for long-term use. A subtle curve at the mouthpiece reduces pressure on the lips, important for referees who must blow the whistle repeatedly throughout a match. The whistle remains stable in the mouth, allowing quick reaction and free movement during fast-paced plays. The included adjustable lanyard ensures easy access and safe handling during games.

Manufactured in Japan and protected by an original patent, the Molten Dolfin Pro WDFPBK is widely used by professional referees, sports clubs, federations and educational institutions, setting a high standard for indoor officiating equipment.

Advantages

• Extremely powerful and sharp sound, 124 dB at 10 cm

• High-frequency tones that cut through loud environments

• Dolphin-inspired design, Good Design Award winner

• Reinforced polycarbonate construction

• Immediate response to airflow

• Slim, comfortable body for long-term use

• Curved mouthpiece reducing lip discomfort

• Stable in the mouth during fast movement

• Adjustable lanyard included

• Made in Japan, patented design

Usage

Suitable for referees and coaches in basketball and football. Also recommended for handball, volleyball and other indoor sports. Ideal for training sessions and competitions where clear, loud acoustic signals are required.

Technical Specifications

• Volume: 124 dB / 10 cm

• Frequencies: 4.10 kHz and 3.74 kHz (4 octaves)

• Material: reinforced polycarbonate

• Dimensions: 17.5 × 61 × 27.5 mm

• Weight: 9 g

• Color: black

• Adjustable lanyard included

• Manufacturer: Molten

• Made in Japan