Seiko Cal. 6170 - 678

This Spring Drive model from 1966 features a 41mm Two-Tone case. Powered by the 6170 caliber with 25j jewels beating at 36,000 bph, it delivers a 63 hours power reserve. [seikata-wm-bb281d86c414]

Also known as: Sumo, Sportsmatic

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

41mm

Case Thickness

11.3mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

50m

Dial Color

Navy

Jewels

25j

Frequency

36,000 bph

Power Reserve

63 hours

Year

1966

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