Seiko Cal. 6687 - 380

The 6687-380 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6687 caliber with 25j jewels beating at 21,600 bph, it delivers a 42 hours power reserve. [seikata-wm-5aef1f18cbc2]

Also known as: Rally

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

37mm

Case Thickness

15.6mm

Lug Width

21mm

Crystal

Sapphire

Bezel

Fixed

Water Resistance

50m

Dial Color

Champagne

Jewels

25j

Frequency

21,600 bph

Power Reserve

42 hours

Year

1981

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