I ordered the 20mm version of this band (I used the 22mm version on my old Galaxy Watch 3) for my new Galaxy Watch 4. K to my surprise, the new strap did not match the new watch. I have micron-adjusted the watch and bracelet and they should work together. Perhaps the problem is related to the geometry of the watch and its pairing with the bracelet. To get it working I had to file the tape down about a millimeter or so and then it worked. The watch band manufacturer needs to investigate and fix this issue for future Galaxy Watch 4 watch band buyers.
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