Seiko Cal. 6257 - 256

The Seiko 6257-256 represents an important milestone in Seiko's 1971 lineup. Powered by the 6257 caliber with 20j jewels beating at 21,600 bph, it delivers a 44 hours power reserve. [seikata-wm-7dd55e2844dc]

Also known as: Bellmatic

Specifications

Movement

Solar

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

8.7mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

Black

Jewels

20j

Frequency

21,600 bph

Power Reserve

44 hours

Year

1971

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