New Ultrasonic Dog Training Device with Variable Frequency, Portable Pet Training Device, USB Rechargeable

[New Version with Variable Frequency for More Effective and Scientific Dog Training] Does your dog bark excessively and disturb the neighbors? Does he jump on people and cause headaches? This new variable frequency ultrasonic dog training device uses advanced technology that continuously changes the frequency, preventing dogs from becoming accustomed to certain behaviors. It is portable, easy to carry, USB rechargeable, features an LED light, and is safe and harmless – for more scientific and effective training. 【Variable Frequency Technology, Habituation Protection】 Multiple Frequency Changes: Unlike traditional fixed-frequency anti-bark devices, variable frequency technology constantly changes the frequency to prevent habituation. Dogs cannot become accustomed to a fixed frequency, ensuring long-lasting effectiveness. Intelligent Tuning: The frequency automatically adjusts to the dog's response (on select models). Three Adjustable Levels: Different intensity levels can be selected for dogs of varying sizes and sensitivities. 【Safe and Harmless, Animal-Friendly】 Shock-Free Design: Purely physical sound wave dissipation, painless. Ultrasonic Principle: High-frequency sound waves gently interrupt unwanted behavior. Inaudible to the Human Ear: Virtually inaudible, won't disturb family members. Safe and Reliable: Harmless to a dog's hearing, suitable for dogs of all sizes. 【Three Modes, One Customizable Response】 Mode 1: Gentle: Low intensity, suitable for small, sensitive dogs and puppies. Mode 2: Standard: Medium intensity, suitable for medium-sized dogs and general training. Mode 3: Strong: High intensity, suitable for large, stubborn dogs and for use at a distance.