1. Effective Bark Control SolutionEnhance your control with 4 adjustable frequency levels, spanning from 15KHz to 30KHz. Experience flexibility with 4 sensitivity levels. Equipped with a builtin pickup, our device detects barking within a 49.2 feet range, promptly emitting ultrasonic signals audible to dogs. 2. Convenient UseThis rechargeable dog barking control device features a userfriendly digital display for effortless operation. With easytoread level adjustments, this device operates on 3 frequency levels. The blue light flashes every 6 seconds to indicate the device is active, while the red light stays on for 3 seconds when activated by barking. Additionally, a red light flashes when the device is low on power and needs to be recharged. 3. Safe for Pets PeopleIt's Environmental and for both humans and dogs. Emitting ultrasounds that are harmless to your furry companion, yet audible enough to capture their attention, it a humane solution to curb unwanted barking. 4. Longlasting UseOnce fully charged for 5 hours, the dog bark control device can remain on standby for approximately 30 days, depending on the frequency of dog barking. It conveniently comes with a TypeC USB cable, allowing for easy charging with a charger, laptop, power bank, and other compatible devices. 5. Wide ApplicationThis bark controller is designed for dogs weighing less than 66lbs, featuring an IP45 waterproof rating for durability in various conditions. Its UV resistant case ensures longlasting protection. The device can be easily mounted on garden fences, homes, dog houses, trees, and more, providing effective control over excessive barking behaviors.