Seiko Cal. 6311 - 820

This Hand-Winding model from 1978 features a 46mm Stainless Steel case. The Coin-Edge bezel and 46mm case give it a distinctive presence on the wrist. [seikata-wm-4059d30fee06]

Also known as: Bullhead, Arnie

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

13.8mm

Lug Width

20mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Navy

Jewels

31j

Frequency

36,000 bph

Power Reserve

44 hours

Year

1978

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