Seiko Cal. 6331 - 447

The Seiko 6331-447 represents an important milestone in Seiko's 1990 lineup. It features a Silver dial protected by a Mineral crystal and offers 150m of water resistance. [seikata-wm-077b320d2318]

Also known as: Bullhead, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

14.9mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

150m

Dial Color

Silver

Jewels

34j

Frequency

21,600 bph

Power Reserve

40 hours

Year

1990

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