Seiko Cal. 5240 - 400

The Seiko 5240-400 represents an important milestone in Seiko's 1965 lineup. Powered by the 5240 caliber with 31j jewels beating at 21,600 bph, it delivers a 41 hours power reserve. [seikata-wm-f6cefd573873]

Also known as: Baby Tuna

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

45mm

Case Thickness

11.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Cream

Jewels

31j

Frequency

21,600 bph

Power Reserve

41 hours

Year

1965

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