Seiko Cal. 5240 - 658

The Seiko 5240-658 represents an important milestone in Seiko's 1977 lineup. Powered by the 5240 caliber with 29j jewels beating at 21,600 bph, it delivers a 67 hours power reserve. [seikata-wm-be5ef9f1616b]

Also known as: Baby Tuna

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

43mm

Case Thickness

9.1mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

110m

Dial Color

Champagne

Jewels

29j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1977

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