Great for Coutntry Dogs!
My collars allow my dogs to run free on my 12 acres. Took them about 2-3 weeks of training before they fully understood and respected the lines, but now they understand the sound/vibrations and rarely even get the warnings. I've had one issue with a collar completely dying, but customer service was wonderful and replaced the collar quickly. Very Happy with my Halo's! Tell everyone I know with dogs about it!