Seiko Cal. 7181 - 338

The Seiko 7181-338 represents an important milestone in Seiko's 1966 lineup. Powered by the 7181 caliber with 23j jewels beating at 21,600 bph, it delivers a 36 hours power reserve. [seikata-wm-203960b5529d]

Also known as: Turtle, Baby Tuna

Specifications

Movement

Kinetic

Case Material

Hardlex-Coated Steel

Case Width

45mm

Case Thickness

10.3mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

150m

Dial Color

Green

Jewels

23j

Frequency

21,600 bph

Power Reserve

36 hours

Year

1966

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