Seiko Cal. 6631 - 510

The 6631-510 is a sought-after Hand-Winding piece from Seiko's golden era. It features a Champagne dial protected by a Acrylic crystal and offers 40m of water resistance. [seikata-wm-91d10739a6ed]

Also known as: Panda

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

44mm

Case Thickness

14.3mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

40m

Dial Color

Champagne

Jewels

19j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1991

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