The Certina 28-45 watch movement, used from 2004 to 2008, is an automatic chronograph rattrapante with functions including a 60-second counter, a 30-minute counter, a 12-hour counter, and a cam-switched mechanism. It also features a split-second function controlled by a pusher at 10 o'clock, a subsecond counter, and a date hand located at 3 o'clock with a quickset feature. Furthermore, the movement incorporates a hack feature and a timer function.