Watch Stem for ETA automatic movements 2824-2, 2834-2, 2836-2, 2801-2 Watch Stem for ETA Automatic Self Winding Movements 2801-2, 2824-2, 2834-2, 2836-2 Goes into the movement and functions the watches setting mechanism One side goes into the movement and other side screws into the watch crown Works with many Swiss watches