Referee Whistle Double Cavity No Core Design High Decibel Portable Whistle for Sports Training Survival Emergency High Treble

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📊 Product Specifications

Product Name: Core-less Dual-Chamber Referee Whistle Net Weight: 11.2g Dimensions: 60mm × 27mm Style: Core-less dual-chamber Material: Food-grade ABS + eco-friendly auxiliary materials Colour Options: Black / Green / Yellow / Red Volume: Up to 120dB Portable Design: Features a lanyard hole and key ring, suitable for use with a lanyard Note: Due to manufacturing processes, there may be slight variations in product dimensions, weight and colour; these minor differences do not affect the product’s functionality or quality.

🌍 Suitable Scenarios

Sports Refereeing: Training sessions and matches for various sports such as football, basketball and volleyball, delivering precise signals for decisions Traffic Control: Traffic police and security personnel directing pedestrian and vehicle flow, clearly maintaining order Outdoor Rescue / Adventure: Long-distance distress signals and team coordination during mountaineering, camping and wilderness expeditions School Sports: School PE lessons, sports days and military training, for efficient organisation and management of students Daily Emergencies: Carried by the elderly and children to quickly send distress signals in case of danger

✨ Product Highlights

High-Volume Penetration: A loud 120dB whistle that won’t be drowned out in noisy environments Stable and Jam-Free: A core-free dual-chamber structure eliminates sound dropouts and jamming, ensuring continuous, stable sound Safe and Durable: Made from food-grade materials, safe for oral contact, and built to withstand impacts for long-term use Ultra-portable: Compact and lightweight with a lanyard/key ring design for quick access anytime, anywhere Versatile for all situations: From professional events to everyday emergencies, meeting all your signalling needs