Износостойкий эхолот конкурс открытый свисток портативный рефери высокое децибел позиционирования Футбол Баскетбол Гонки Обучение

Description:
Professional referee whistle, basketball volleyball football sports whistle.
Dual airflow design is adopted for better sound transmission and farther distance.
With hanging holes, can wear a rope around neck, very convenient.
Made of ABS material, safe and reliable.
Applicable scene: ball game, wild adventure call for help, rescue command.
Specifications:
Product name: Whistle
Color: Black
Material: ABS
Volume: About >130db
Size: About 6 x 2 cm
Package Included:
1 PC* Whistle
Note:
Transition: 1cm=10mm=0.39inch.
1.Due to the light and screen difference, the item's color may be slightly different from the pictures.
2.Please allow 0.5-2 cm differences due to manual measurement.