The Bettlach 1554 is a manual wind watch movement with sub-second functionality. It was produced around 1935, and its specific differences from other Felsa movements in the 71, 73, 75-80, 144, 166, 167, 203, 205, 216, 219, 240, 255, 268, 284, 286, 287, and 326 series are not known.
The Bettlach 1554 features the following functions: