Seiko Cal. 0778 - 998

This Solar model from 1970 features a 46mm PVD Black case. Powered by the 0778 caliber with 25j jewels beating at 28,800 bph, it delivers a 67 hours power reserve. [seikata-wm-52882e1b1bb5]

Also known as: Helmet, Sportsmatic

Specifications

Movement

Solar

Case Material

PVD Black

Case Width

46mm

Case Thickness

8.7mm

Lug Width

20mm

Crystal

Mineral

Bezel

Bidirectional

Water Resistance

90m

Dial Color

Champagne

Jewels

25j

Frequency

28,800 bph

Power Reserve

67 hours

Year

1970

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