Seiko Cal. 6257 - 491

The Seiko 6257-491 represents an important milestone in Seiko's 1975 lineup. Powered by the 6257 caliber with 36j jewels beating at 28,800 bph, it delivers a 49 hours power reserve. [seikata-wm-b8df2df058d4]

Also known as: Arnie

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

44mm

Case Thickness

8.7mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

70m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

28,800 bph

Power Reserve

49 hours

Year

1975

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