Seiko Cal. 6180 - 633

This Spring Drive model from 1983 features a 40mm Titanium case. Powered by the 6180 caliber with 19j jewels beating at 36,000 bph, it delivers a 58 hours power reserve. [seikata-wm-6aaa38ac94b2]

Also known as: Tuna, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

40mm

Case Thickness

14.4mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

190m

Dial Color

Cream

Jewels

19j

Frequency

36,000 bph

Power Reserve

58 hours

Year

1983

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