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), perfect 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 Humanes Training: Non-harmful ultrasonic sound ensures stress-free training for pets while maintaining a peaceful environment. Ideal for Pet Owners and Trainers: Suitable for dog trainers, pet owners, and outdoor enthusiasts looking for an effective anti-barking and behavior control device. Notice: 1.Actual color may be slightly different from the image due to different light effect 2.Please allow 1-3cm deviation due to manual measurement Battery capacity: 800 mA Working hours: ≧90 days Charging time: 0.5 hours Rated frequency :15-40KHZ Rated Power: < 3W Rated power supplies :DC5V Package List: 1x Anti Barking Device for Dogs