Seiko Cal. 6687 - 404

The 6687-404 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6687 caliber with 17j jewels beating at 21,600 bph, it delivers a 70 hours power reserve. [seikata-wm-e28efa5a4e50]

Also known as: Rally

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

36mm

Case Thickness

12.3mm

Lug Width

19mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

170m

Dial Color

Green

Jewels

17j

Frequency

21,600 bph

Power Reserve

70 hours

Year

1973

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