Seiko Cal. 6387 - 406

The 6387-406 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6387 caliber with 25j jewels beating at 36,000 bph, it delivers a 42 hours power reserve. [seikata-wm-86e1efd6bb90]

Also known as: World Timer

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

46mm

Case Thickness

11.1mm

Lug Width

21mm

Crystal

Acrylic

Bezel

Bidirectional

Water Resistance

110m

Dial Color

Champagne

Jewels

25j

Frequency

36,000 bph

Power Reserve

42 hours

Year

1972

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