Aetertek AT-218 Dog Training Collar With Remote 9 Levels Of Shock Vibration and Beep for Small, Medium and Large Dogs Pet Safe Waterproof Rechargeable 600 Yards Range With Auto No Bark Feature STOPS UNWANTED BAD BEHAVIORS. Collar features vibrations, beeps and 9 levels of progressive shock. SAFE AND EFFECTIVE. Very humane dog training collar, strong vibration stops dog's bad behavior 99% of the time. WATERPROOF COLLAR. 100% waterproof and rechargeable collar and goes up to 600 yards in range. FITS ALL DOGS. From 15 to 100 pounds with a collar size from 12 to 26 inches long. AUTOMATIC BARK FEATURE. Comes with an automatic bark function feature.