Ultrasonic Vibration Anti Barking Automatic Dog Training Collar

No More Bark 🐶 This collar is designed to help you train your dog to bark less. It has several features that make it an efficient behavior modification tool, including: - USB Rechargeable: You don't need to worry about buying batteries. Simply plug in and charge via USB for convenience. - Ultrasonic Technology: The ultrasonic sound waves emitted by the collar are inaudible to humans but effective in deterring barking. - Automatic Collar: The collar automatically activates when it detects barking, making it easy to use and effective in training your dog. - Vibration Function: The collar also has a vibration function that can be used as an alternative to ultrasonic sound waves. Specifications: - Material: Plastic + Nylon - Size: Approx. 2.6 x 1.6 x 1.2 in - Battery: Built-in 300mA battery - Charging Method: USB charging - Adjustable Diameter Range: 6-36cm - Dog size: all sizes Features: - 7-level sensitivity adjustment - Easily rechargeable with a USB cable -Tinier, lighter, and more com