DUAL PACK: Set includes 2 professional training whistles in black and white colors, each with an attached lanyard for convenient carrying

ADJUSTABLE FREQUENCY: Features precision-engineered frequency control that can be customized to your dog's optimal hearing range

SILENT DESIGN: Ultrasonic frequency is inaudible to human ears while remaining highly effective for dog training and behavior correction

VERSATILE USE: Perfect for recall training, behavior modification, and addressing excessive barking issues in both your own and neighboring dogs

DURABLE CONSTRUCTION: Made from high-quality materials that withstand regular outdoor use and varying weather conditions