Seiko Cal. 0731 - 137

The 0731-137 is a sought-after Solar piece from Seiko's golden era. Powered by the 0731 caliber with 27j jewels beating at 36,000 bph, it delivers a 51 hours power reserve. [seikata-wm-6d1ee19c3c80]

Also known as: Samurai, Baby Tuna

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

10.0mm

Lug Width

18mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

100m

Dial Color

Silver

Jewels

27j

Frequency

36,000 bph

Power Reserve

51 hours

Year

1989

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