the Seiko 7548 was a top-tier dive watch when it came out, featuring a sturdy build and advanced technology for its time. It was comparable in quality and price to other high-end watches like the Omega Seamaster, indicating its premium status. It was positioned as a premium offering by Seiko, with a design and construction quality that set it apart from other models at the time. The movement, based on the highly regarded 6309 automatic movement but adapted for quartz intended for ... professional use in extreme conditions.