The Elgin 158 watch movement features an indirectly driven minute hand, allowing for a relatively large balance and low profile. It closely resembles the ETA calibres 2480/2485 and 2482/2487, with the only difference being a mirror inversion. The dial feet positions are also mirrored, making it impossible to interchange dials between the variants. This movement functions as a manual wind mechanism and was used during the approximate period of 1959.