【Dog Bark Control and Training】 : Ultrasonic dog training device is a safe and effective dog training tools, it can effectively train your dogs to correct unwanted behavior likes barking, planing, scratching, biting and other disgusting behaviors. An ultrasonic sound emitter will train your dog without resorting to sounds that damage their ears in any way.  

【Three Different Frequencies Waves】: dog barking deterrent equipped with three different frequencies of ultrasound: stable frequency, fluctuation frequency and irregular frequency. Multiple frequencies ideal for different dogs which can also prevent dogs from learning to recognize ultrasonic bark control device.  

【Long Battery Life and Rechargeable】 : Barking control devices has a built-in 1200 mAh rechargeable battery ( USB charging cable included in the box), only takes 3 hours to fully charge and provide 50 days of daily use time, eliminating the trouble of repeated charging. The high-definition LCD display can clearly see the ultrasonic mode used and remaining power.  

【Three modes of lighting】 :The flashlight is very bright and can be used when walking the dog at night. There are also fast flashing and slow flashing light modes,these flashlights are equipped with strong ultrasound to prevent other dogs from approaching you.  

【Portable Design】: The ultrasonic dog deterrent comes with a lanyard, making it a great choice for walking the dog at night. Ultrasonic range reaches 5m/16.4ft, which can also be used outdoors and traveling. Note: This dog bark training device is not effective for dogs with hearing impairment. We do not recommend using it for dogs under 6 months and over 8 years old.