Sports Whistle for Soccer Basketball Volleyball, Lightweight Portable Adjustable Crisp Sound, Environmentally Friendly Reddish Yellow

Item Type: Whistle
Material: ABS Resin
Size: Approx. 49 x 20 x 13mm / 1.9 x 0.8 x 0.5in
Frequency: 0-4000 Hz
1、Independent sound holes on both sides of the whistle, the sound can be transmitted to both sides of the court.
2、Considering that human ears are more sensitive to 1000?4000Hz audio, so the treble frequency is set to 4000Hz.
3、Adjustable nylon lanyard, the lanyard can easily pass through the tail hole, and the length of the lanyard is fixed by double balls.
4、Made of ABS resin, whistle is environmentally friendly material, hot and cold temperature resistant, light weight, very portable.
5、Widely use, the whistle bulk are great for referees, coaches, teachers, training, survival, emergency, school, sports, give away etc.

1 x Whistle

1 x Lanyard

1 x Mouthguard

1 x Storage Box