This is the fourth time I"ve attempted to keep my dog trained remotely using a deterrent collar. Other units worked acceptably, but I am glad I gambled on this one because it has the best controls, and longest range I've had. Love the dial on/off switch which saves transmitter battery. Ditto, the clear controls and large size of the control box. The collar charges with a magnetic prong, doesn't need a "hole" plug in which in other units gets filled with mud. Charger can't get bent while charging the collar. Battery life is easily as good if not better than other units I've tried. I would recommend this collar without hesitation.