Seiko Cal. 6221 - 688

The Seiko 6221-688 represents an important milestone in Seiko's 1987 lineup. Powered by the 6221 caliber with 31j jewels beating at 21,600 bph, it delivers a 45 hours power reserve. [seikata-wm-c3d0f9d744a0]

Also known as: Bullhead, Navigator

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

36mm

Case Thickness

11.9mm

Lug Width

22mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Green

Jewels

31j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1987

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