Seiko Cal. 7031 - 521

The Seiko 7031-521 represents an important milestone in Seiko's 1994 lineup. Powered by the 7031 caliber with 23j jewels beating at 28,800 bph, it delivers a 60 hours power reserve. [seikata-wm-9ad3ec06c4cc]

Also known as: Golden Tuna

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

12.5mm

Lug Width

20mm

Crystal

Acrylic

Bezel

Inner Rotating

Water Resistance

90m

Dial Color

Burgundy

Jewels

23j

Frequency

28,800 bph

Power Reserve

60 hours

Year

1994

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