🐾 Train Smart, Bark Less! Ultrasonic sound is safe for dogs, ensuring a humane approach. Utilize dual modes for effective training and deterrence. Rechargeable battery lasts up to 30 days on a single charge. Button press includes vibration for enhanced user experience. Slim design fits comfortably in your hand, perfect for on-the-go. Effective up to 25 ft Ultrasonic range: 20-25 kHz 800mAh rechargeable battery The Dog Barking Control Device features dual ultrasonic sensors that emit safe sound frequencies to deter unwanted barking. With a rechargeable battery lasting up to 30 days, it offers two modes for training and deterrence, a slim design for easy handling, and a vibration feedback mechanism for user comfort.