Seiko Cal. 5646 - 615

This Spring Drive model from 1981 features a 39mm Hardlex-Coated Steel case. With its 21mm lug width and 12.1mm profile, it sits comfortably on most wrists. [seikata-wm-bf2534ddc9fa]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

39mm

Case Thickness

12.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

90m

Dial Color

Burgundy

Jewels

32j

Frequency

28,800 bph

Power Reserve

43 hours

Year

1981

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