Seiko Cal. 6687 - 471

The Seiko 6687-471 represents an important milestone in Seiko's 1980 lineup. Powered by the 6687 caliber with 32j jewels beating at 28,800 bph, it delivers a 51 hours power reserve. [seikata-wm-13ebda01df59]

Also known as: Helmet, Rally

Specifications

Movement

Hand-Winding

Case Material

PVD Black

Case Width

46mm

Case Thickness

8.3mm

Lug Width

22mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

30m

Dial Color

Navy

Jewels

32j

Frequency

28,800 bph

Power Reserve

51 hours

Year

1980

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