【Effective Barking Solution】Utilizes advanced 15-40KHz ultrasonic technology to safely deter excessive barking, aggression, and unwanted behavior without physical contact. Perfect for both training and behavior correction.<br> 【Portable & User-Friendly】Compact lightweight design (110×30mm) with ergonomic grip. Easy to carry for walks, travel, or home use. Quick 0.5-hour charge provides ≧90 days of continuous use with 800mAh battery.<br> 【Dual-Function Device】Works as both a dog repeller and training aid. Helps establish obedience while maintaining a peaceful environment. Non-harmful sound ensures stress-free training for pets of all sizes.<br> 【Professional-Grade Performance】<3W rated power with DC5V supply delivers consistent results. Ideal for pet owners, dog trainers, and outdoor enthusiasts seeking humane behavior control solutions.<br> 【What's Included】1× Ultrasonic Anti-Bark Device (color may vary slightly due to lighting). Note: Manual measurement may have 1-3cm variance.