Seiko Cal. 6387 - 321

The Seiko 6387-321 represents an important milestone in Seiko's 1980 lineup. Powered by the 6387 caliber with 22j jewels beating at 36,000 bph, it delivers a 70 hours power reserve. [seikata-wm-95403a923493]

Also known as: World Timer, Baby Tuna

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

37mm

Case Thickness

9.0mm

Lug Width

19mm

Crystal

Sapphire

Bezel

Inner Rotating

Water Resistance

70m

Dial Color

Champagne

Jewels

22j

Frequency

36,000 bph

Power Reserve

70 hours

Year

1980

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