Anti-barking device, dog bark control devices, 3 levels of ultrasonic dog barking deterrence

General description This anti-barking device is designed to emit ultrasonic sounds that only dogs can hear, providing a calming effect for your pet while ensuring peace and quiet for you and your neighbors. The ultrasonic sounds are harmless to pets and completely inaudible to humans. Technical specifications Adjustable ultrasonic levels: 3 levels Effective range: up to 33 feet Battery type: rechargeable via USB Battery life: up to 30 days on a full charge Charging time: 5 hours IPX4 waterproof rating Usage Recommended for dogs aged 6 months to 8 years without hearing issues. Adjustable ultrasonic levels suitable for different dog sizes: 15-30 levels for large dogs, 20 levels for gentle dogs, and 30 levels for small dogs. Features an automatic barking stop function that activates only when barking is detected. Other information LED indicators: Blue light blinks every 6 seconds when operating at 3 levels; red light stays on for 3 seconds when activated by barking; red light blinks when battery is low. Portable design with a hook for easy attachment to trees, walls, or fences.