Seiko Cal. 6138 - 657

The 6138-657 is a sought-after Solar piece from Seiko's golden era. Powered by the 6138 caliber with 29j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-b962ae586cf0]

Also known as: Monster, Silverwave

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

36mm

Case Thickness

8.4mm

Lug Width

18mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Burgundy

Jewels

29j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1985

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