Seiko Cal. 6631 - 835

The 6631-835 is a sought-after Spring Drive piece from Seiko's golden era. The Rotating bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-82df5803af5a]

Specifications

Movement

Spring Drive

Case Material

PVD Black

Case Width

46mm

Case Thickness

9.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

120m

Dial Color

Navy

Jewels

31j

Frequency

28,800 bph

Power Reserve

41 hours

Year

1986

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