Seiko Cal. 6331 - 237

This Hand-Winding model from 1975 features a 45mm PVD Black case. It features a Black dial protected by a Acrylic crystal and offers 150m of water resistance. [seikata-wm-572217ebc985]

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

45mm

Case Thickness

13.3mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Black

Jewels

35j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1975

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