Seiko Cal. 6648 - 436

The Seiko 6648-436 represents an important milestone in Seiko's 1967 lineup. Powered by the 6648 caliber with 17j jewels beating at 28,800 bph, it delivers a 59 hours power reserve. [seikata-wm-b1677dc0b64c]

Also known as: Sea Horse

Specifications

Movement

Spring Drive

Case Material

Hardlex-Coated Steel

Case Width

46mm

Case Thickness

10.5mm

Lug Width

22mm

Crystal

Mineral

Bezel

Inner Rotating

Water Resistance

120m

Dial Color

Navy

Jewels

17j

Frequency

28,800 bph

Power Reserve

59 hours

Year

1967

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