This Anti Barking Device training aid emits a powerful (yet harmless) ultrasonic sound, teaching your dog to associate the unpleasant sound with disobeying commands to stop barking. Unlike shock collars that are painful and can be used only on one dog, the Anti Barking Device can be used virtually anywhere without you having to ask permission from your neighbors. The Anti Barking Device trains dogs to stop nuisance barking (boredom and attention-getting barking) but is designed to have no effect on instinctual or protective barking! Harmless and humane ultrasonic to deter dogs from annoying and aggressive behaviors.

Features:

• Easy to Use
• Repel Dogs
• Train your dog to stop barking.
• Lightweight and portable.
• LED flashlight also functions as battery indicator 

Specifications:

• Item Type: Repellents
• Model Number: Ultrasonic Pet Dog Repeller
• Material: Plastic
• Item Size: 140 * 40 * 30mm / 5.51 * 1.57 * 1.18 inch
• Battery: 9 V Alkaline battery (not included)
• effective distance: 5 to 10 meters