2 PCS Handheld Whistle Finger Grip Sport Referee Whistle Reusable Referee Whistle Loud Crisp Sound Whistle Plastic Sports Whistles for Training and Outdoor Camping Product description Features: 【FINGER GRIP】The referee whistle is made of ABS and can be flexibly worn on up to three fingers, making it more convenient to use during the game without worrying about the whistle falling or being lost, improving work efficiency. 【TOOTH GUARD】The referee's whistle is equipped with a PVC tooth cover, which not only protects the teeth from discomfort caused by long-term use, but also effectively protects the whistle from damage from external impacts or collisions. 【LOUD SOUND】The referee whistle adopts a coreless dual-tone design, which is easy to blow and can produce a sharp and clear whistle. It has penetrating power and the whistle can be heard in noisy environments, easily attracting others' attention. 【COMPACT SIZE】The referee whistle feels smooth and can be fixed on the finger without holding it, so the referee can pay more attention to the game. It is also small and lightweight, making it easy to carry whether it is competition or training. 【WIDE APPLICATION】The referee whistle is not only suitable for use in various sports training or competitions, such as football, basketball, etc., it is also suitable for use in emergency situations such as outdoor safety, self-defense, and survival. Specification: Material: ABS(whistle), PVC(tooth guard) Color: black(whistle), transparent(tooth guard) Feature: durable, reusable Size(approx.): (L x H)5.7 x 5.4cm/2.24 x 2.13inch Package Included: 2 PCS x Referee Whistle Note: 1. Due to the light and screen difference, the item's color may be slightly different from the pictures. 2. Please allow 1-2 cm differences due to manual measurement.