Seiko Chronograph Titanium

Seiko Conceptual — quartz.

Seiko Digital Chronograph — quartz (caliber a824), stainless steel, 37 mm, 10 bar / 100 m water resistance.

Seiko Conceptual Series — quartz, stainless steel, 22 mm, gold-toned.

Seiko Classic

Seiko Conceptual — quartz (seiko 4n30), battery 379 / sr521sw.

Seiko Conceptual — quartz, stainless steel, 37 mm, thickness 10 mm, 10 ATM / 100 metres - suitable for swimming water resistance.