Seiko Cal. 6181 - 690

The Seiko 6181-690 represents an important milestone in Seiko's 1979 lineup. Powered by the 6181 caliber with 34j jewels beating at 28,800 bph, it delivers a 46 hours power reserve. [seikata-wm-3a4b38404444]

Also known as: Turtle, Baby Tuna

Specifications

Movement

Automatic

Case Material

Titanium

Case Width

39mm

Case Thickness

15.3mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Bidirectional

Water Resistance

140m

Dial Color

Green

Jewels

34j

Frequency

28,800 bph

Power Reserve

46 hours

Year

1979

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