Electronic Whistle with USB Charging 3 Tone High Volumes Emergency Whistle for Referee Coaches Teacher Enduring

Features: Electronic whistle get rid of the traditional way of blowing a whistle with your mouth, and meanwhile provide a loud, clear, strong and easily recognizable sound. Adjust the volumes to the level that best meets your needs in different spaces and occasion, so that the sound can heard and protect your hearing. Make of plastic materials, strong, enduring, crack resistant and fall resistant. Portable and small size, suitable for pockets and backpacks. Suitable for most kind of indoor or outdoor sports training: diving, basketball,volleyball, hockey and more.

Specifications: Materials: Plastic Color: Black/Red/Blue/Gray/Yellow Size: about 136.5x38mm/5.37x1.5inch

Package Includes: 1Pc Electronic Whistle

note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.