NoMoreBark ? NoMoreBark has designed an ultrasonic anti-barking device. We know that you can be very hesitant when looking at purchasing a Dog Training Collar, so this is why we created the Dog Silencer it is completely harm free inaudible to human ears. Don?t Buy An Electric Dog Collar? The electric shock from electric dog collars can cause psychological distress for your pet, including phobias and high levels of stress, and can also result in unhealthy increases in heart rate. Fast Results You will notice an instant change in your dog's habits. Your dog will bark a few times but then adapt to the device and will then stop its barking! Product Features -Completely waterproof safe to use outside where desired! -Works within 15 meters of distance, can be used on your neighbours dog! -Harmless to pets completely inaudible to the human ear! -The Device can be hung on a tree, indoor, outdoor or fence to prevent your dog from barking! Product Details Name: Dog Silencer Colour: Black Size: 11x8.5x4.9cm Weight: 190g Packing: Boxed Material: ABS + electronic components What's Included Dog Training Device USB Cable Screw Pack Manual