Well they are not supposed to be.
They are all supposed to be programmed differently. If you get the pet version you are supposed to supply them with the dog’s weight and size so they can program it correctly. I am a little skeptical still about all of it. I will say, I got my equine one 2 years ago and the first thing I did was strap it to myself.
Within 4 days the tendon pain and sciatica I had for weeks prior was gone. I do think it helps with pain with my horses too. I have one with chronic lymphangitis and his leg did go down after a few days of wearing it. I also think my other horse moved better but that is a subjective opinion. I have not seen it actually heal a condition, like wounds don’t go away quicker when using it. But overall I am happy to have it around to use therapeutically.