ALEKO No bark collar is top of the Line bark control collar is high quality bark collar adjusts to your dog temperament. Waterproof bark collar is best for medium to large dogs, of all temperament types, even stubborn breeds. With different modes of operation, you can find the best bark control option for your dog. Train your dog to stop excessive barking easily and painlessly. The Pet Trainer's new No Bark Anti Bark Control Collar offers perfect bark technology. The bark control collar is activated by a vibration sensor and microphone, this prevents unintentional corrections. It also ensures that the bark collar will only activate if the dog wearing the bark control collar starts barking or making other nuisance level noise, ensuring your dog is never confused by a correction occurring accidentally. New no bark collar (adjust intensity of the sensitive) ---with press "plus" - button to adjust the sensitivity 1. The crescent moon - shaped design, smart size 2. Easy use and test 3. 7 levels of sensitivity 4. 2 work mode (sound and shock) 5. Enter 1 minutes auto-protection mode after 7 times work 6. Effective training collar 7. high performance 8. Patent design Accessories: 1 x 4LR44 6V. 1 x dog collar. 1 x test light. 2 x pair electric antenna. 1 x English Manual.