Doggy Man Training Signal Manner Call Training Aid [Product Description] *Please also refer to photos 9-11. Gentle and Easy Training for Pets ・Learns with a sound (ultrasonic) that attracts the dog's attention. Ultrasonic sound is difficult for humans to hear, but your dog can hear it well. ・You can train without raising your voice. ・You can switch between strong and weak settings. ・Lightweight and compact. ・A lamp will notify you when it sounds. [Condition] The battery is dead, so the operation has not been confirmed. Please understand this point in advance and consider it as a junk item.