Feature:
【Dog-Friendly Barking Control Device】This ultrasonic 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.
【Dog-Friendly Barking Control Device】This iMounTEK ultrasonic 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.
【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. This dog barking box has a small and lightweight appearance, making it easy to carry. You can also carry it with you during outdoor activities for outdoor use.
【Long-lasting Battery】Fully Charged only about 5 hours, the dog bark control device can keep standby in about 30 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..
【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. 
【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..
 
Specification:
Material: ABS
Color: Black
Built-in Rechargeable Battery: 1Pc 3.7V 1500mAh Battery
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
Size: 10.7*8.5*3.5CM
 
What's included:
1 x Ultrasonic Anti-barking Device
1 x Type-C USB Cable
2 x Screws 
2 x Plastic Expansion Anchors
 
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.