New POPETPOP Dog Training Whistle, Set of 2, Dog Whistle, Dog Training Whistle, Anti-Barking, Ultrasonic Dog Whistle, Adjustable Pitch, Lightweight, Pet Supplies, Professional Use, Multiple Dogs, Training for Dogs with Disabilities, High + Low Frequency Combination Commands, Outdoor, For Seniors, Easy Operation, Efficient Recall, Photo ‐ Mercari: Shop from Japan