Seiko Cal. 5661 - 555

This Spring Drive model from 1997 features a 37mm Two-Tone case. With its 22mm lug width and 15.2mm profile, it sits comfortably on most wrists. [seikata-wm-72d758b447fc]

Also known as: Sportsmatic, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

15.2mm

Lug Width

22mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

110m

Dial Color

Champagne

Jewels

30j

Frequency

28,800 bph

Power Reserve

42 hours

Year

1997

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