3 Adjustable Modes: Our bark control device has three adjustable modes, Mode 1 (15kHz): suitable for mischievous or large dogs, Mode 2 (20kHz): more suitable for gentle dogs, and Mode 3 (30kHz): more suitable for small dogs. Whether you need gentle reminders for slightly barking dogs or stronger deterrence for stubborn barking dogs, our bark stopper can meet your needs. Choose the mode that best suits your furry friend and enjoy a quieter and more peaceful environmentRechargeable Dog Barking Devices: Our barking control device contains a 1500mAh rechargeable battery. With a rechargeable battery, you can bid farewell to the hassle of constantly purchasing and replacing batteries. Just charge your device when needed and enjoy continuous barking control. With it, you can fully enjoy your lifeEffective & Dog-Friendly Bark Box: Designed with your dog's well-being in mind, our dog barking deterrent devices are both effective and dog-friendly. It emits a safe ultrasonic sound that is audible to dogs but gentle enough to avoid causing any harm or discomfort. This makes it an effective training tool for reducing excessive barking behaviorWaterproof Anti Bark Devices: Our anti barking device adopts a waterproof design, which is not only sturdy, but also can be used outdoors in various weather conditions, and can withstand the test of daily use and outdoor environment. Regardless of wind or rain, you can trust this dog bark deterrent device to effectively prevent unnecessary barking. Our dog deterrent devices are designed to be convenient and easy to use, providing fast and effective barking control anytime, anywhereAuto Dog Barking Silencer: The automatic no bark device provides a reliable solution to stop dogs from barking excessively. Once activated by a dog's barking, it emits ultrasonic waves to prevent the dog from barking. The high-frequency sound it produces can make the dog feel uncomfortable, effectively preventing the dog from barking without causing harm. Very suitable for indoor and outdoor use, it helps maintain peace and tranquility in families or communities.