Texas Instruments calculator watch from 80s, all functions working perfect. DSCN6669 DSCN6671 DSCN6673 DSCN6681 DSCN6684 DSCN6688 DSCN6689 DSCN6692 DSCN6699 DSCN6703 DSCN6707 DSCN6709 DSCN6715 DSCN6721 DSCN6730 DSCN6739 DSCN6751 DSCN6828 DSCN6834 DSCN6843
