Seiko Cal. 6678 - 647

This Hand-Winding model from 1988 features a 39mm Stainless Steel case. Powered by the 6678 caliber with 35j jewels beating at 21,600 bph, it delivers a 59 hours power reserve. [seikata-wm-ec922b694fd0]

Also known as: Helmet

Specifications

Movement

Hand-Winding

Case Material

Stainless Steel

Case Width

39mm

Case Thickness

14.5mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Rotating

Water Resistance

160m

Dial Color

Navy

Jewels

35j

Frequency

21,600 bph

Power Reserve

59 hours

Year

1988

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