Seiko Cal. 5640 - 417

The 5640-417 is a sought-after Hand-Winding piece from Seiko's golden era. With its 19mm lug width and 13.2mm profile, it sits comfortably on most wrists. [seikata-wm-ccbc6adc58f1]

Also known as: Bellmatic, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

44mm

Case Thickness

13.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

200m

Dial Color

Navy

Jewels

25j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1991

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