
I've been using mine since February and have since gifted to another family member who was having trouble raising two German Shepherds. I can attest to the durability and longevity of the batteries in both the collar and controller. While helping my family member, I discovered another great feature: in addition to a safety switch to prevent accidental "pocket" training, the device also has removable rubber caps for the metal electrodes, so you can only train with you Vibration or War modes can begin. This is good for both the dog and the handler who are not yet used to the controls, or for those who never want to use the shock function(s). I should ONLY use the shock when my Border Collie is ignoring my commands and vibrate/horn modes while chasing our horses. By the way, this dog "knows" if I'm not wearing a collar or don't have a controller. Likewise, if they were off or the battery was low (I used one too many to see how long it took to charge the battery on the device), the dog will know it's wearing it and will follow voice commands.

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