Enhanced Anti-Interference Technology: Our bark collar uses an upgraded smart chip to minimize false triggers (less than 5%), activating only when barking and vocal cord vibrations are detected. This ensures the collar only responds to your dog's behavior. Customizable Training Modes: This bark collar for medium, and large dogs offers 4 modes: beep, vibration, optional shock, and 5 sensitivity levels. You can customize training for your dog's needs, making it perfect for those looking for an anti bark collar that suits all sizes and behaviors. Fast Charging & Waterproof: Fully charge in 2 hours with USB（not include charging head）, and enjoy up to 15-20 days of use. With an IP67 waterproof rating, this bark collar for large dogs and small dogs is suitable for any weather, making it perfect for outdoor activities and play. Adjustable & Comfortable Fit: Suitable for dogs from 8 to 120 lbs with neck sizes of 8 to 25 inches. This small dog bark collar has removable shock prongs, providing extra comfort for dogs not needing the shock feature. Ideal for those seeking a vibrating dog collar no shock option. Smart Bark Monitoring: This no bark collar for dogs includes a built-in bark counter, helping you track barking behavior. Easily monitor and adjust settings to ensure effective training for reducing unwanted barking. Premium Customer Support: If you encounter any issues or accidents while using the dog training collar, please don't hesitate to reach out to us via Amazon message. We are here to offer professional assistance and provide you with clear guidance to ensure you get the most out of your product. Usage Guide: Adjust the desired mode (beep/vibration/beep + vibration + static shock) and sensitivity level (refer to recommended settings in the product images). Ensure the collar is fitted with the right tension, positioned below the dog’s vocal cords. The collar will automatically activate when barking is detected, helping to prevent unwanted barking. Introducing our Multi-functional Training Collar - perfect for dogs of all sizes, featuring sound, vibration, and shock modes. With a 1600ft remote range, it ensures effective training indoors and outdoors. Safety is paramount with overcharge protection and IP67 waterproof rating. Innovative technology provides instant response, while the ergonomic design and emergency lighting enhance user experience.