Dogwidgets DW-1 Rechargeable Electronic E Collar Safe Pet Dog Training Collars for 2 dogs with Remote With Individual Vibration for Each Dog Small, Medium and Large Dog Shock Collars For Two Dogs STOPS UNWANTED BAD BEHAVIORS. Features strong vibrate and shocks to eliminate all bad behaviors. SAFE AND EFFECTIVE. Very humane collar, strong vibration stops dog's bad behavior 99% of the time. SIMPLE DESIGN REMOTE CONTROL. 7 total buttons for vibrate and shocks, no need to toggle/switch buttons to deliver vibrations or shocks. FITS ALL DOGS. From 6 to 100 lbs with a collar size from 6 to 24 inches long. BEST CUSTOMER SUPPORT. Best customer email and phone support with 6 months replacement warranty. BUY WITH CONFIDENCE.