Seiko Cal. 6616 - 620

The 6616-620 is a sought-after Hand-Winding piece from Seiko's golden era. With its 21mm lug width and 11.5mm profile, it sits comfortably on most wrists. [seikata-wm-5c37fe137fec]

Also known as: Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

37mm

Case Thickness

11.5mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

100m

Dial Color

Silver

Jewels

36j

Frequency

28,800 bph

Power Reserve

37 hours

Year

1988

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