Pro Ultrasonic Bark Control Device - 4 Variable Frequencies - Humane, 100% No Shocks or Sprays (Black)

Anti-Habituation Technology: Unlike standard devices, our 4-zone variable frequency constantly changes the sound pattern. This prevents dogs from becoming "bored" or accustomed to the sound, ensuring long-term effectiveness. Humane & Zero-Shock: A 100% safe, pain-free training tool. It uses ultrasonic sound waves, completely inaudible to humans, to gently interrupt barking without the need for static shocks or chemicals. AI Smart-Sensor Detection: Equipped with an upgraded internal microphone that accurately identifies dog barks while filtering out background noise, reducing "false triggers" from wind or slamming doors. Rechargeable Battery Power: No more wasting money on expensive batteries. The high-capacity lithium-ion battery charges via USB and provides up to 30 days of use on a single charge.