Seiko Cal. 5670 - 648

The Seiko 5670-648 represents an important milestone in Seiko's 1978 lineup. Powered by the 5670 caliber with 30j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-ee94a7e3c42e]

Also known as: Tuna, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Stainless Steel

Case Width

45mm

Case Thickness

12.8mm

Lug Width

20mm

Crystal

Sapphire

Bezel

Coin-Edge

Water Resistance

30m

Dial Color

White

Jewels

30j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1978

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