Seiko Cal. 7031 - 275

The 7031-275 is a sought-after Hand-Winding piece from Seiko's golden era. Powered by the 7031 caliber with 33j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-859aa588530c]

Also known as: Monster, Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Two-Tone

Case Width

41mm

Case Thickness

13.0mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

Green

Jewels

33j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1983

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