Copkim 6 Pcs Electronic Whistle Adjustable 3 Different Loud Volume Button Electric Whistles with Lanyard Handheld Sports Whistle Battery Operated Whistle for Referees Volleyball Coaches Teacher, Black

Features:
Our teacher electronic whistle is in classic and modern black, and can also be hung around the neck as your clothing accessories. It is suitable for most occasions and brings you a good sense of use experience.
This black whistle is very suitable as a gift for your family members, relatives, friends, colleagues, teachers and neighbors, enhancing your interpersonal relationship.

Specifications:
Material: ABS plastic
Color: black
Size: about 5.4 x 1.5 inches

Package includes:
6 x Electronic whistles
6 x Drawstring bags

Notes:
Manual measurement, please allow slight errors on size.
The color may exist a slight difference due to different screen displays.