Seiko Cal. 6657 - 345

The Seiko 6657-345 represents an important milestone in Seiko's 1984 lineup. It features a Blue Sunburst dial protected by a Mineral crystal and offers 110m of water resistance. [seikata-wm-0c5adfb3ccc4]

Also known as: Monster, Bullhead

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

44mm

Case Thickness

10.8mm

Lug Width

19mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1984

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