Seiko Cal. 4540 - 680

The Seiko 4540-680 represents an important milestone in Seiko's 1998 lineup. With its 22mm lug width and 15.5mm profile, it sits comfortably on most wrists. [seikata-wm-d259790804b5]

Also known as: Baby Tuna

Specifications

Movement

Quartz

Case Material

PVD Black

Case Width

36mm

Case Thickness

15.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

200m

Dial Color

Black

Jewels

21j

Frequency

28,800 bph

Power Reserve

72 hours

Year

1998

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