Seiko Cal. 6131 - 658

The 6131-658 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6131 caliber with 18j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-ca4ce0abc779]

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

14.3mm

Lug Width

20mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

200m

Dial Color

Green

Jewels

18j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1999

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