With the Master out for servicing, the other three remote units are useless. Comes with replacement. I like them for the first month but why cant they make a product that will last at least a year shameful especially at that price Not worth at this price. For the price, its exactly what I expected. They run long. To me this a clear case of a more than 3 but less than 4 stars rating; it would be 4 stars if the throat-line stretching were not needed. I would not spend your money on this style of shoe. So for example if you are shoe size 10 mens, get a 10 and 11 in the slides. I figured they wouldnt last a week of my just mild walking at the gym even.