Pet Dog Repeller Whistle Anti Barking Stop Bark Training Device. Specifications: Item Type: Dog Whistles Is Smart Device: No Model Number: Dog Training Material: Plastic Type: Dogs Item Type: Repellents Model Number: Anti Barking Device Powered By: 9V Battery (not Included) Type: Dog Training Color: Yellow, Black Suit For: Dogs Sound Pressure: 130dB Max Current: 130 MA Frequency: 25 KHz Feature: Ultrasonic with LED Flashlight Dog Repeller Anti Barking Ultrasonic 3 in 1 Dog Training Device Anti Barking Dog Barking Anti-bark Collars Small Dogs Type 1: Ultrasonic Anti Bark Type 2: Bark Deterrent Type 3: Ultrasonic Bark Type 4: Stop Barking Dog Type 5: Outdoor Bark Control Type 6: Barking Device Notes If You Find That It Does Not Work Well when Stopping the Dog from Hitting, Please Change the Battery in Time. We Recommend Using Rechargeable Batteries. When the Dog is Kept Silent, Do Not Use the Product to Stimulate. Use Ultrasonic Control Equipment Within Effective Distance. The Battery is Not Included in the Package, Please Buy It Yourself. Dog Insect Repellent Can Be Applied to Most Dogs, but Sometimes It Will Not Be Suitable for Large Dogs. . We are an international seller, your order will be shipped from abroad so please allow the necessary time of minimum 14 working days for delivery right now depending on where you ship to, due to ongoing delays in postal deliveries globally.