Seiko Cal. 5613 - 687

The 5613-687 is a sought-after Hand-Winding piece from Seiko's golden era. With its 21mm lug width and 10.0mm profile, it sits comfortably on most wrists. [seikata-wm-510eda214db0]

Also known as: Sumo, Bullhead

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

43mm

Case Thickness

10.0mm

Lug Width

21mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

140m

Dial Color

Silver

Jewels

24j

Frequency

28,800 bph

Power Reserve

53 hours

Year

1984

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