Seiko Cal. 5241 - 138

The Seiko 5241-138 represents an important milestone in Seiko's 1984 lineup. Powered by the 5241 caliber with 35j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-2038745380d8]

Also known as: Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

14.1mm

Lug Width

19mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Black

Jewels

35j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1984

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