Seiko Cal. 7028 - 521

The Seiko 7028-521 represents an important milestone in Seiko's 1990 lineup. Powered by the 7028 caliber with 35j jewels beating at 36,000 bph, it delivers a 38 hours power reserve. [seikata-wm-5ba31dd63b4f]

Also known as: Silverwave, Sportsmatic

Specifications

Movement

Automatic

Case Material

Two-Tone

Case Width

45mm

Case Thickness

14.5mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

160m

Dial Color

Silver

Jewels

35j

Frequency

36,000 bph

Power Reserve

38 hours

Year

1990

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