Seiko Cal. 6387 - 899

The 6387-899 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6387 caliber with 32j jewels beating at 28,800 bph, it delivers a 44 hours power reserve. [seikata-wm-50f05a2694cb]

Also known as: Helmet, Rally

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

40mm

Case Thickness

14.2mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

60m

Dial Color

Champagne

Jewels

32j

Frequency

28,800 bph

Power Reserve

44 hours

Year

1975

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