Features: Advanced ultrasonic technology uses high-frequency sound waves to safely deter barking, aggression, and animal attacks without physical contact. Portable and lightweight design, compact and easy to carry (110x30mm), ideal for indoor and outdoor pet training. Dual-function device works as both a dog repeller and a pet training tool to enhance obedience and prevent unwanted behavior. Safe and humane training with non-harmful ultrasonic sound, ensuring stress-free sessions for pets while maintaining a peaceful environment. Suitable for dog trainers, pet owners, and outdoor enthusiasts seeking an effective solution for barking and behavior control. Note: Actual color may vary slightly from the image due to different lighting conditions. A 1-3 cm deviation may occur due to manual measurement. Battery capacity: 800 mAh Working hours: 90 days Charging time: 0.5 hours Rated frequency: 15–40 kHz Rated power: < 3 W Rated power supply: DC 5V