Seiko Cal. 0731 - 137

Seiko 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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