Seiko 7548-7000

• 7548's were produced between 1978 and 1985
• 7548 is a sturdy, high torque 5 jewels quartz movement
• battery: silver oxide SR43SW (3+ years)
• end of battery life indicator: the seconds hand moves in two seconds steps.

Links

• http://www.thewatchsite.com/index.php?topic=8934.0