Seiko Cal. 5671 - 648

The 5671-648 is a sought-after Quartz piece from Seiko's golden era. Powered by the 5671 caliber with 30j jewels beating at 36,000 bph, it delivers a 55 hours power reserve. [seikata-wm-651e76ed7ef9]

Also known as: Bullhead, Emperor

Specifications

Movement

Quartz

Case Material

Two-Tone

Case Width

36mm

Case Thickness

12.2mm

Lug Width

20mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

140m

Dial Color

Silver

Jewels

30j

Frequency

36,000 bph

Power Reserve

55 hours

Year

1974

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