Premium Anti Bark Collar with 7 Adjustable Intensities for a Pet Safe Experience and Fast Results, Perfect for Training your Small, Medium and Large Dog, 100% SATISFACTION GUARANTEED! EASY TO USE - Simply slip it around your dogs neck and the collar will work automatically. No more excessive barking from your dogs. PET SAFE AND EFFECTIVE - #1 dog collar to safely and effectively stop excessive barking. Will not hurt any dog because of its advanced technology. FITS MOST DOGS - Adjustable Nylon strap(7in to 28in)suitable for large, medium and small dogs, 2 different electrode sizes for short or long hair. 7 SENSITIVITY LEVELS - Different levels available suitable for each individual barking case, + and - buttons easy to press. 100% SATISFACTION GUARANTEED! Please contact us immediately if you have any issues or concerns.