Advanced Remote Dog Training Shock Collar Best Results 3 Modes / Tone / Vibration / Shock Electric Perfect for training and curbing bad habits like rummaging through trash, constant barking, chasing cars, Refusing to "come" when called and many more Advanced range technology to that allows for 900 Ft Range - Great for dogs who like to run in the yard 3 stimulation modes for effective training - Shock, Vibration & Tone System is ideal for dogs between 10 - 120 lbs - Perfect for Small, Medium and Large Dogs Effectively train your dog in just a matter of day