Anti-Bark Collar for Small and Medium Dogs, 53g Ultra-Lightweight, No Electric Shock, Fully Automatic, 7-Level Beep & Vibration Recommended for all breeds and sizes About this product 【Latest Anti-Bark Collar】Highly effective and designed without electric shock. Safely trains your dog with 3 modes: beep, vibration (1-7 levels), and automatic protection. Ideal as an anti-bark collar. 【Smart Dual Sensor】Detects barking at specific frequencies and decibels, preventing malfunctions from other sounds or other dogs' voices. Optimal as an anti-bark collar. 【Long-lasting Rechargeable】Can be used for about 20 days with a 2-hour charge. USB charging method, perfect for preventing barking. 【Suitable for a Wide Range of Dog Breeds】Suitable for dogs with a neck circumference of 18-54cm and a weight of 2kg-30kg. Anti-barking device that can be used for medium to large dogs.