Seiko Cal. 6640 - 876

This Spring Drive model from 1983 features a 34mm Two-Tone case. It features a Burgundy dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-396e9b7bb638]

Also known as: Monster

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

34mm

Case Thickness

9.5mm

Lug Width

18mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Burgundy

Jewels

33j

Frequency

28,800 bph

Power Reserve

64 hours

Year

1983

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