Seiko Cal. 5257 - 776

The Seiko 5257-776 represents an important milestone in Seiko's 1982 lineup. Powered by the 5257 caliber with 23j jewels beating at 21,600 bph, it delivers a 59 hours power reserve. [seikata-wm-8b789bb58adc]

Also known as: Sumo, World Timer

Specifications

Movement

Automatic

Case Material

PVD Black

Case Width

45mm

Case Thickness

11.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

120m

Dial Color

White

Jewels

23j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1982

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