Seiko Cal. 6231 - 366

The Seiko 6231-366 represents an important milestone in Seiko's 1981 lineup. It features a Black dial protected by a Mineral crystal and offers 50m of water resistance. [seikata-wm-d4b515f27963]

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

39mm

Case Thickness

8.7mm

Lug Width

22mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

50m

Dial Color

Black

Jewels

33j

Frequency

28,800 bph

Power Reserve

61 hours

Year

1981

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