Seiko Cal. 6331 - 506

This Hand-Winding model from 1985 features a 40mm Gold-Plated case. With its 20mm lug width and 8.7mm profile, it sits comfortably on most wrists. [seikata-wm-fdea3599cd99]

Also known as: UFO

Specifications

Movement

Hand-Winding

Case Material

Gold-Plated

Case Width

40mm

Case Thickness

8.7mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

White

Jewels

19j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1985

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