Seiko Cal. 6690 - 355

This Spring Drive model from 1983 features a 36mm Two-Tone case. Powered by the 6690 caliber with 31j jewels beating at 36,000 bph, it delivers a 39 hours power reserve. [seikata-wm-aa3f0b552970]

Also known as: Sumo, Pogue

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

36mm

Case Thickness

8.4mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

200m

Dial Color

Champagne

Jewels

31j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1983

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