The Elgin 902 watch movement is a quartz movement that encompasses a range of functional features. It includes a chronograph function, which allows for accurate timing and recording of intervals. It also incorporates an alarm function, enabling the user to set predetermined alerts. Additionally, the movement incorporates a day and date display, providing convenient reference for current day and date information. The A159A also utilizes an LCD display, translating the movement's functions into a readable and intuitive format.