Seiko Cal. 7113 - 331

Seiko 7113-331

The 7113-331 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 7113 caliber with 35j jewels beating at 28,800 bph, it delivers a 37 hours power reserve. [seikata-wm-135b5f7ad50f]

Also known as: Turtle

Specifications

Movement
Spring Drive
Case Material
Hardlex-Coated Steel
Case Width
46mm
Case Thickness
8.0mm
Lug Width
20mm
Crystal
Mineral
Bezel
Coin-Edge
Water Resistance
30m
Dial Color
Navy
Jewels
35j
Frequency
28,800 bph
Power Reserve
37 hours
Year
1985

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