Seiko Cal. 6678 - 706

This Automatic model from 1970 features a 40mm Two-Tone case. It features a Silver dial protected by a Mineral crystal and offers 170m of water resistance. [seikata-wm-6ea542df1552]

Also known as: Sumo

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

40mm

Case Thickness

10.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

170m

Dial Color

Silver

Jewels

21j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1970

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