Seiko Cal. 5270 - 631

The 5270-631 is a sought-after Solar piece from Seiko's golden era. Powered by the 5270 caliber with 19j jewels beating at 36,000 bph, it delivers a 45 hours power reserve. [seikata-wm-e648524be01b]

Also known as: Sportsmatic, Golden Tuna

Specifications

Movement

Solar

Case Material

Gold-Plated

Case Width

45mm

Case Thickness

11.9mm

Lug Width

22mm

Crystal

Hardlex

Bezel

Fixed

Water Resistance

80m

Dial Color

White

Jewels

19j

Frequency

36,000 bph

Power Reserve

45 hours

Year

1979

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