Seiko Cal. 6631 - 206

The 6631-206 is a sought-after Hand-Winding piece from Seiko's golden era. The Inner Rotating bezel and 34mm case give it a distinctive presence on the wrist. [seikata-wm-09246307f300]

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

34mm

Case Thickness

10.2mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

50m

Dial Color

Silver

Jewels

28j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1982

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