Seiko Cal. 6340 - 287

The 6340-287 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 6340 caliber with 23j jewels beating at 28,800 bph, it delivers a 63 hours power reserve. [seikata-wm-3c3cfa9bffb5]

Also known as: Monster, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

43mm

Case Thickness

10.1mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Fixed

Water Resistance

130m

Dial Color

Silver

Jewels

23j

Frequency

28,800 bph

Power Reserve

63 hours

Year

1997

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