• Advanced ultrasonic technology that detects barking and automatically emits waves to calm the dog without harming it. • Features 3 ultrasonic modes: normal ultrasound, enhanced, and frequency conversion to adapt to different needs. • Effective range of up to 50 feet, ideal for both indoor and outdoor use. • IPX4 water resistance, durable design, and weather-resistant for operation in any weather. • Rechargeable battery with a full charge in 3 hours and an operating autonomy of up to 45 days. • Compact and lightweight design that allows for easy installation on trees, walls, or posts.