Seiko Cal. 5689 - 521

The Seiko 5689-521 represents an important milestone in Seiko's 1967 lineup. Powered by the 5689 caliber with 20j jewels beating at 36,000 bph, it delivers a 53 hours power reserve. [seikata-wm-e45a3716c1a8]

Also known as: Tuna, Pogue

Specifications

Movement

Solar

Case Material

Stainless Steel

Case Width

41mm

Case Thickness

8.1mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Green

Jewels

20j

Frequency

36,000 bph

Power Reserve

53 hours

Year

1967

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