Seiko Cal. 6257 - 163

This Hand-Winding model from 1973 features a 37mm Two-Tone case. Powered by the 6257 caliber with 26j jewels beating at 21,600 bph, it delivers a 63 hours power reserve. [seikata-wm-2ac0adfe98f7]

Also known as: Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

37mm

Case Thickness

13.1mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Bidirectional

Water Resistance

100m

Dial Color

Black

Jewels

26j

Frequency

21,600 bph

Power Reserve

63 hours

Year

1973

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