Stop Unnecessary Barking! STOPP malfunction! The "Norbark Training Color" and "Sound & Vibration" for pets can safely train unnecessary barking When the sensor detects the ringing voice, the sound and vibration activates to stimulate the hearing and tactile sensation of your dog, and learn to stop barking Effects may vary from individual items, but in about 1 month, dogs will be corrected and ready to do proper actions. High quality sensor; Only reacts to the sound of the dog barking and the vibration in the throat. The system minimizes the possibility of malfunctions such as other dogs barking and dishes sounds. Safe and effective: Vibrates to train with strong vibrations. Vibration lasts for seconds. Your dog will be surprised and stop barking (There may be individual differences in reactions. Compliments immediately after barking stop) ----Train with sound ---- Stops wasted barking by the sound of high decibels that can be heard by humans. (Makes a sound that does not dislike dogs) ◆ How to wear: Wear the collar with room for 1 to 2 peoples fingers. Place the plastic part under the chin. Easy to adjust and remove. One-touch buckle; Weight: 2.2 oz (60 g); Neck size: 14.0 - 27.0 inches (35.7 - 68.8 cm); Size: (approx.) W 3.3 x H 1.0 inches (8.5 x 3.7 x 2.5 cm); Set contents: Main unit, button batteries (CR2032) (built-in, replaceable batteries (*test batteries) ABS plastic, (collar) PP polypropylene.