Seiko Cal. 6278 - 310

This Spring Drive model from 1986 features a 38mm Hardlex-Coated Steel case. Powered by the 6278 caliber with 28j jewels beating at 36,000 bph, it delivers a 68 hours power reserve. [seikata-wm-3473ba094d23]

Also known as: Samurai, Tuna

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

38mm

Case Thickness

12.2mm

Lug Width

22mm

Crystal

Acrylic

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Cream

Jewels

28j

Frequency

36,000 bph

Power Reserve

68 hours

Year

1986

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