Seiko Cal. 6391 - 616

The 6391-616 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Burgundy dial protected by a Sapphire crystal and offers 60m of water resistance. [seikata-wm-54c85d6c8b80]

Also known as: Sumo

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

11.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Burgundy

Jewels

20j

Frequency

21,600 bph

Power Reserve

46 hours

Year

1982

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