Seiko Cal. 6631 - 416

The 6631-416 is a sought-after Kinetic piece from Seiko's golden era. It features a Silver dial protected by a Acrylic crystal and offers 30m of water resistance. [seikata-wm-afcb48508ff0]

Also known as: Sumo, Bullhead

Specifications

Movement

Kinetic

Case Material

Stainless Steel

Case Width

35mm

Case Thickness

9.8mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Silver

Jewels

23j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1988

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