Seiko Cal. 6257 - 707

The Seiko 6257-707 represents an important milestone in Seiko's 1976 lineup. Powered by the 6257 caliber with 34j jewels beating at 36,000 bph, it delivers a 72 hours power reserve. [seikata-wm-3b4bcff01039]

Also known as: Sportsmatic, Flighty

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

40mm

Case Thickness

13.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

30m

Dial Color

Blue Sunburst

Jewels

34j

Frequency

36,000 bph

Power Reserve

72 hours

Year

1976

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