Seiko Cal. 5621 - 716

The Seiko 5621-716 represents an important milestone in Seiko's 1987 lineup. Powered by the 5621 caliber with 24j jewels beating at 21,600 bph, it delivers a 66 hours power reserve. [seikata-wm-06cc1abf32ff]

Also known as: Bullhead, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

14.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

160m

Dial Color

Blue Sunburst

Jewels

24j

Frequency

21,600 bph

Power Reserve

66 hours

Year

1987

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