Seiko Cal. 6257 - 437

The 6257-437 is a sought-after Kinetic piece from Seiko's golden era. Powered by the 6257 caliber with 17j jewels beating at 36,000 bph, it delivers a 62 hours power reserve. [seikata-wm-ee3fb2455fe5]

Also known as: Monster, Rally

Specifications

Movement

Kinetic

Case Material

PVD Black

Case Width

40mm

Case Thickness

8.1mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Inner Rotating

Water Resistance

60m

Dial Color

Champagne

Jewels

17j

Frequency

36,000 bph

Power Reserve

62 hours

Year

1970

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