Does your dog keep barking when see someone visiting which annoys you so much? Take this ultrasonic anti-barking device home and train your dog instantly! This dog bark control deice features 3 adjustable ultrasonic frequency levels, which emit sounds that dogs can hear but will not hurt them, efficiently stopping your dog’s barking. Equipped with long-lasting battery, this sonic bark deterrent can keep standby 60 days after fully charged about 6 hours. Suitable for dogs from 6 months old to 8 years old. The device can be mounted at garden fence, home, dog house, tree etc.. Efficient Anti-barking Device: Comes with 3 adjustable frequency levels, including 30KHz for small dogs, 20KHz for docile dogs and 15/30KHz for big and naughty dogs. The 15/30KHz frequency level will automatically switch into 15KHz or 30KHz ultrasound from time to time. With max 26.2ft sensing distance, the device can efficiently help your dog curb barking. Easy To Use: This rechargeable dog barking control device comes with a LED Indicator can be used without any effort. When the device works on 3 frequency levels, the light will flash blue every 6 seconds. The red light stays on 3 seconds when the sonic bark deterrent is triggered by barking. And the red light will flash when in low power and needed to be charged. Pet & Human Safe: No poison and chemical, super environmentally friendly. Emit ultrasounds that are friendly to human beings and can be heard by your dog but cannot hurt it. Long-lasting Battery: Fully Charged only about 6 hours, the dog bark control device can keep standby in about 60 days according to the frequency of dog barking. Comes with a type-C USB cable, which can be charged by charger, laptop and power bank etc.. Wide Applications: Suitable for dogs from 6 months old to 8 years old and weighing below 50 pounds. The device can be mounted at garden fence, home, dog house, tree etc.. Friendly Reminder: 1. Only suitable for 1 dog when use. 2. Only fit for dogs from 6 months old to 8 years old and weighing below 50 pounds. 3. Please mount our anti-barking device between 1.6ft and 2ft. Brand: iMounTEK Product Type: Ultrasonic Anti-barking Device Color: Black Material: ABS Built-in Rechargeable Battery: 1Pc 2.5-4.2V/0.3A 1500mAh Battery(Battery is not for individual sale) Input: 5V/2A Charging Time: About 6Hrs Standby Time: About 60 Days Waterproof Level: IPX4 3 Ultrasonic Frequency Levels: 15/30KHz, 20KHz, 30KHz Sensor: Sound Detection Sensing Distance: 5m-8m/16.4ft-26.2ft Suggestible Mounting Height: 0.5-0.6m/1.6-2ft Suggestible Dog Age: 6 Months Old-8 Years Old Suggestible Dog Weight: ＜22.7kg/50lbs Suggestible Dog Quantity: 1 Dog Type-C USB Cable Length: 80.5cm/31.7in Item Size: 9x3.8x11.5cm/3.5x1.5x4.5in Item Weight: 137g/0.3lbs Package Size: 11.5*9*6cm/4.53*3.54*2.36in Package Weight: 195g/0.43lbs 1 x Ultrasonic Anti-barking Device 1 x Type-C USB Cable 2 x Screws 2 x Plastic Expansion Anchors 1 x User Manual