Electric Whistler Color: Yellow Material: Plastic Size: 1.5'' X 5.5'' Three tone sound Easy to operate These are multipurpose junction electric whistler. These are great for referees, coaches, trainer, life guards and police. These produces 3 variable sounds. Features Easy to operate Three tone function Sound can be aimed in specific direction Can be used in all temperatures and environment Brand No Brand SKU OT776SP00NJZSNAFAMZ-144019