Seiko Cal. 5257 - 648

The Seiko 5257-648 represents an important milestone in Seiko's 1966 lineup. Powered by the 5257 caliber with 22j jewels beating at 28,800 bph, it delivers a 71 hours power reserve. [seikata-wm-5710953f8687]

Also known as: Turtle

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

45mm

Case Thickness

9.9mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

70m

Dial Color

Burgundy

Jewels

22j

Frequency

28,800 bph

Power Reserve

71 hours

Year

1966

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