Do you feel particularly angry about noisy environments?Are you annoyed that your neighbor's dog is always noisy but they do nothing?Are you feeling powerless and angry that dog suddenly barking for no reason?Anti barking device can help you to stop unwanted dog barking. It will disrupt the barking without any physical harm for your dog or the neighbor's dogsWhy Choose our Stop Barking Device?Main Features: Detects the sound of barking up to 50ft Ultrasonic waves are emitted through dual speakers Only uses ultra-sound to deter unwanted dog barking 3 different ultrasonic modes are suitable for dogs with different temperaments Rechargeable built-in 1600mAH lithium battery continuously works for over 30 daysLight Indication:Charging time: 3 hoursBattery duration: over 30 daysWhen charging, the red light is on.Fully charged, the green light will be on.P