Seiko Cal. 6670 - 274

This Spring Drive model from 1969 features a 42mm Hardlex-Coated Steel case. It features a Silver dial protected by a Mineral crystal and offers 180m of water resistance. [seikata-wm-5630ec7c3f94]

Also known as: Sumo

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

10.4mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

180m

Dial Color

Silver

Jewels

32j

Frequency

28,800 bph

Power Reserve

55 hours

Year

1969

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