Tudor caliber T401-901

ETA 2892 with a proprietary module made by Tudor for the alarm function. A pusher at 8:00 is used to turn the alarm on and off; the crown at 2:00 to set and wind it. The status of the alarm can be red via a window at 9:00 (on/off) and a power reserve indicator (just for the alarm) at 3:00.