PetSafe Ultrasonic Dog Remote Trainer

Collarless Ultrasonic Remote Trainer takes advantage of your pet's sensitive hearing with a sound that is beyond the range of humans. When the system emits its ultrasonic sound, your furry friend will understand that you want him to stop whatever he is doing. The system also has a positive tone to reward good behaviors as well as a negative tone to counter undesirable ones.

Features:

• For dogs of any size
• Ultrasonic sound only your dog can hear
• Positive and negative tones for added training flexibility
• Range up to 30 feet
• Remote uses 9-Volt alkaline battery (included)