ISA Swiss 9516/3030

Historical ISA analog-digital quartz calibre with small seconds and a digital display providing calendar, alarm, second time zone and chronograph modes. The reference describes a perpetual calendar valid through 2099, a backlight and a CR2025 cell. Dimensions are not established by the retrieved evidence. Attribution is to the historical ISA quartz range, not a claim of manufacture by the current ISA Timepieces Swiss SA mechanical-movement company.