Features: Automatically activates ultrasonic bark control when your dog barks, providing training with humane, for effective pet behavior correction. Features adjustable intensity settings tailored to breed sensitivity, USB rechargeable battery lasting weeks per charging, and durability PC/ABS construction for indoor/outdoor use. Ideal for busy pet owners, multiple dog households, or noise sensitive environments seeking a reliability solution to reduce excessive barking without physical intervention. Maintains peace during working from home hours, nighttime rest, or outdoor gatherings by instantly discouraging unwanted barking through safe ultrasonics. Combines smart automation with pet friendly design, offering protecting against disruptive barking while promoting long term behavioral adjustments through consistent training feedbacks. Specifications: Dimension:11×8.5×4.4cm/4.33×3.34×1.73in Component:PC/ABS Package Includes: 1pc dog training device note: 1.Please allow 1-2cm errors due to manual measurement, making sure that you will not mind before order. 2.Due to the differences between different monitors, the picture may not reflect the actual color.