Seiko Cal. 0748 - 677

The Seiko 0748-677 represents an important milestone in Seiko's 1977 lineup. Powered by the 0748 caliber with 31j jewels beating at 21,600 bph, it delivers a 72 hours power reserve. [seikata-wm-484aa78064bf]

Also known as: Bullhead, Helmet

Specifications

Movement

Quartz

Case Material

Titanium

Case Width

46mm

Case Thickness

14.4mm

Lug Width

21mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

80m

Dial Color

Cream

Jewels

31j

Frequency

21,600 bph

Power Reserve

72 hours

Year

1977

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