Seiko Cal. 6616 - 631

The 6616-631 is a sought-after Hand-Winding piece from Seiko's golden era. With its 19mm lug width and 12.3mm profile, it sits comfortably on most wrists. [seikata-wm-8bff826be13c]

Also known as: Crown

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

44mm

Case Thickness

12.3mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Black

Jewels

35j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1983

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