General description The Ultrasonic Anti Barking Device is an effective solution for controlling excessive barking in dogs. Designed with advanced ultrasonic technology, this device can stop barking from a distance of up to 33 feet. It features four adjustable modes to cater to different barking situations, ensuring a tailored approach to training your dog. Technical specifications Modes: 4 adjustable modes Level 1: Variable frequency (15-30KHz) Level 2: 20KHz frequency Level 3: 30KHz frequency Battery: Built-in 1500mAh lithium battery Standby time: Up to 30 days after a full charge (5 hours) Waterproof rating: IPX4 Compatibility and accessories Compatible with most dog breeds and sizes (not effective on deaf or hard of hearing dogs) Package includes: 1 Anti Bark Device, 1 Dog Whistle, 1 USB Cable, 2 Mounting Screws and Anchors, 1 User Manual Usage Effective for training large, medium, and small dogs Some dogs may require up to 2 weeks of training to respond to the device May not be