Seiko Cal. 6631 - 529

The 6631-529 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Cream dial protected by a Sapphire crystal and offers 120m of water resistance. [seikata-wm-fbeb5a61196d]

Also known as: Arnie

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

35mm

Case Thickness

11.2mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

120m

Dial Color

Cream

Jewels

19j

Frequency

28,800 bph

Power Reserve

40 hours

Year

1998

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