Seiko Cal. 6257 - 939

The 6257-939 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6257 caliber with 23j jewels beating at 36,000 bph, it delivers a 39 hours power reserve. [seikata-wm-1fca5de61270]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

42mm

Case Thickness

9.7mm

Lug Width

21mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

30m

Dial Color

Black

Jewels

23j

Frequency

36,000 bph

Power Reserve

39 hours

Year

1983

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