2025 Smart collar features five different sonic frequencies that can effectively prevent dogs from barking (BeepandVibration mode is recommended).Collar between 27 inches. Fits 8-120 pounds with a neck size of 6-27 inches. which improves visibility in dim settings. The thickness of the nylon strap has been increased while maintaining its softness, ensuring that your furry friend finds it comfortable durable.The collar features 5 smart AI safety training modes is equipped with an advanced anti-mistrigger chip. Simply press the M button at any time to enjoy some quiet time. With adjustable sensitivity ranging from 0 to 7, this feature allows the collar to effectively correct a dog's bad habits.IP67 rating, ensuring its resistance to both water dust, making it suitable for various environments. Plus, it offers an impressive battery life - just two hours of charging can keep it operational for up to 10 to 15 days.The Bark Collar is easy to use, featuring just two buttons: the on/off button, which controls both the power switch sensitivity, the mode button, which controls four different dog training modes.