Seiko Cal. 6687 - 364

Released in 1988, the Cal. 6687 with design code 364 was part of Seiko's domestic market collection. Powered by the 6687 caliber with 35j jewels beating at 36,000 bph, it delivers a 36 hours power reserve. [seikata-wm-aac67cc05645]

Also known as: Baby Tuna

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

34mm

Case Thickness

15.0mm

Lug Width

20mm

Crystal

Mineral

Bezel

Fixed

Water Resistance

170m

Dial Color

Black

Jewels

35j

Frequency

36,000 bph

Power Reserve

36 hours

Year

1988

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