Seiko Cal. 6360 - 677

This Automatic model from 1978 features a 41mm Hardlex-Coated Steel case. Powered by the 6360 caliber with 27j jewels beating at 21,600 bph, it delivers a 65 hours power reserve. [seikata-wm-dc0f5938c227]

Also known as: Helmet

Specifications

Movement

Automatic

Case Material

Hardlex-Coated Steel

Case Width

41mm

Case Thickness

10.9mm

Lug Width

20mm

Crystal

Hardlex

Bezel

Coin-Edge

Water Resistance

80m

Dial Color

Green

Jewels

27j

Frequency

21,600 bph

Power Reserve

65 hours

Year

1978

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