Seiko Cal. 5257 - 405

The Seiko 5257-405 represents an important milestone in Seiko's 1981 lineup. Powered by the 5257 caliber with 29j jewels beating at 36,000 bph, it delivers a 48 hours power reserve. [seikata-wm-c7cd7fa626af]

Also known as: Tuna, Sea Horse

Specifications

Movement

Solar

Case Material

Two-Tone

Case Width

34mm

Case Thickness

11.4mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

190m

Dial Color

Champagne

Jewels

29j

Frequency

36,000 bph

Power Reserve

48 hours

Year

1981

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