SpecificationProduct name: anti-barking agent for dogs.Power supply: USB.Input voltage: 3.7 V.Input current: 40 mAh.Battery: 3.7 V 1500 mAh.Waterproof IP rating: IPX4.Sensor: Sound DetectionSensor distance: up to 33 feet.Ultrasonic frequency: 15 KHZ-30 KHZ. Function:1. ;SAFE AND EFFECTIVE The anti-bell for dogs is an innovative solution for barking dogs and correcting unwanted behavior. ;The ultrasonic dog training device is safe and effective for all types and sizes (5-120 lbs) of dogs. ;Suitable for dogs from 6 months to 8 years.2. ;Wide Working Range This new ultrasonic is suitable for outdoor use with a range of 33 feet. ;The dog barking deterrent device is great for stopping neighbouring dogs or homeless dogs barking near your home, creating a quiet living environment for your family.3. ;15 DAYS LONG WORKING TIME:This bark control device only needs 5 hours full charge and can work 1