Seiko Cal. 5646 - 437

The Seiko 5646-437 represents an important milestone in Seiko's 1993 lineup. With its 22mm lug width and 12.1mm profile, it sits comfortably on most wrists. [seikata-wm-a89b8e131a6a]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

12.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

120m

Dial Color

Cream

Jewels

25j

Frequency

36,000 bph

Power Reserve

47 hours

Year

1993

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