Seiko Cal. 6331 - 646

The 6331-646 is a sought-after Kinetic piece from Seiko's golden era. With its 18mm lug width and 12.0mm profile, it sits comfortably on most wrists. [seikata-wm-3060afd36cb3]

Also known as: Bullhead, Bellmatic

Specifications

Movement

Kinetic

Case Material

Gold-Plated

Case Width

41mm

Case Thickness

12.0mm

Lug Width

18mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Green

Jewels

22j

Frequency

36,000 bph

Power Reserve

37 hours

Year

1985

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