DR CATCH Electronic Whistle with Lanyard Adjustable, 3 Tone High Volume Electric Whistle for Referee Coaches, PE Teacher, Outdoor Camping Hiking and Boating Emergency Whistles (Black) | Creative Products
Electronic whistles Better than traditional whistles -- Hand held electronic whistle Compared with traditional whistle, referee and coach can avoid mouth contact the whistles. The electronic whistle only needs to click to make a sound, which can produce a strong and consistent sound every time. For some people with shortness of breath Multifunction electronic whistle
