Seiko Cal. 6387 - 411

The 6387-411 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6387 caliber with 35j jewels beating at 21,600 bph, it delivers a 45 hours power reserve. [seikata-wm-7cb4146dafdc]

Also known as: UFO, Emperor

Specifications

Movement

Spring Drive

Case Material

Gold-Plated

Case Width

46mm

Case Thickness

10.6mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

110m

Dial Color

White

Jewels

35j

Frequency

21,600 bph

Power Reserve

45 hours

Year

1978

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