Seiko Cal. 5257 - 770

This Spring Drive model from 1988 features a 37mm Stainless Steel case. Powered by the 5257 caliber with 28j jewels beating at 36,000 bph, it delivers a 41 hours power reserve. [seikata-wm-478e026b7edc]

Also known as: UFO

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

13.1mm

Lug Width

21mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

120m

Dial Color

White

Jewels

28j

Frequency

36,000 bph

Power Reserve

41 hours

Year

1988

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