Advanced Ultrasonic Technology: Uses high-frequency sound waves to safely deter barking, aggression, and animal interactions without physical contact. Portable & Lightweight Design: Compact and easy to carry (110x30mm), ideal for indoor and outdoor pet training. Dual-Function Device: Functions as both a dog deterrent and a pet training tool to improve obedience and prevent unwanted behavior. Safe & Humane Training: Non-harmful ultrasonic sound promotes stress-free training for pets while supporting a calm environment. Ideal for Pet Owners & Trainers: Suitable for dog trainers, pet owners, and outdoor enthusiasts seeking an effective solution for barking and behavior management. Note: Actual color may vary slightly due to lighting effects. A 1-3cm measurement deviation may occur due to manual measurement. Battery Capacity: 800 mAh Working Time: 90 days Charging Time: 0.5 hours Rated Frequency: 15-40 kHz Rated Power: < 3W Rated Power Supply: DC5V