Seiko Cal. 0713 - 340

This Spring Drive model from 1970 features a 34mm Two-Tone case. It features a Silver dial protected by a Hardlex crystal and offers 170m of water resistance. [seikata-wm-f3be7b0bc8be]

Also known as: Sumo, Bullhead

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

34mm

Case Thickness

14.2mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Silver

Jewels

28j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1970

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