Do not ask for more for the price. Wire "fishing" that breaks, replaced by 0.5mm, casing adjustment potentiometer which solves nothing and that is a simple 0/1 switch, about the necklace ... not tight, excessive consumer of stack, But for the price, it's just money thrown out the window .... Eventually I decided after this useless purchase on the material pro PETSAFE.
Avoid unless you want to spend money unnecessarily.