For dogs over 40 lbs. and necks as much as 33″;. 100 yard vary. Electronic hand held transmitters deliver correction signals the remote coaching collar from a distance of as much as 100 yards.
Electronic remote delivers correction signals to dog collar
16 ranges of stimulation plus tone-simplest button
+2 Spice up button for distractions
PetSafe Massive Dog Remote Teacher, Type PDT00-13411