Petrainer PET660-2 Dog Fence Collar

FeaturesUp to 5.000 square meters range (over 1.24 acre)Comfortable waterproof collar receiverCan train 2 dogs at same time with two receiver collarsProportional static shock and progressive warning tone. It is closer your dog gets to the boundary. the shock will be more instensiveSpeed detection: Your dog is moving faster. The intensity level is higherAudible and visual wire break indicatorsCE and RoHS certificationSuitable for dogs between 20 and 120 pounds