I am also trying to figure out if it replaceable. I have fixed 3 series 1 38 mm apple watches before and they were simple. The one i was fixing yesterday was very difficult and i got very angry when it did not work. I opened up again and the flex cable was torn just a bit. Please link me to a video that shows how to fix it. I cant find anything! (I dont have much experience with small scale repairs like apple watches)