By: Al HORNERI've been using training aids on my hunting companions (pooches, not people) for several decades. The SD 1825 is the best I've had. It's lightweight, waterproof, easy to use, holds charges well, and has good range. For single/double dogs, it's all I use now.
Al Horner - Minnesota Upland Hunter.
Review ID: 644
out of 5-stars.