Seiko Cal. 4520 - 321

The Seiko 4520-321 represents an important milestone in Seiko's 1998 lineup. Powered by the 4520 caliber with 36j jewels beating at 21,600 bph, it delivers a 58 hours power reserve. [seikata-wm-9f13aa12a110]

Also known as: Navigator, Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Titanium

Case Width

46mm

Case Thickness

11.8mm

Lug Width

18mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Blue Sunburst

Jewels

36j

Frequency

21,600 bph

Power Reserve

58 hours

Year

1998

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