Seiko Cal. 6278 - 373

This Hand-Winding model from 1966 features a 40mm Hardlex-Coated Steel case. Powered by the 6278 caliber with 18j jewels beating at 28,800 bph, it delivers a 65 hours power reserve. [seikata-wm-4c4d6d156e62]

Also known as: Rally, Sportsmatic

Specifications

Movement

Hand-Winding

Case Material

Hardlex-Coated Steel

Case Width

40mm

Case Thickness

12.2mm

Lug Width

19mm

Crystal

Mineral

Bezel

Coin-Edge

Water Resistance

40m

Dial Color

Navy

Jewels

18j

Frequency

28,800 bph

Power Reserve

65 hours

Year

1966

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