Seiko Cal. 5611 - 678

Released in 1971, the Cal. 5611 with design code 678 was part of Seiko's domestic market collection. Powered by the 5611 caliber with 21j jewels beating at 36,000 bph, it delivers a 49 hours power reserve. [seikata-wm-202cf495bf6e]

Also known as: Monster, Sea Horse

Specifications

Movement

Hand-Winding

Case Material

Titanium

Case Width

42mm

Case Thickness

10.6mm

Lug Width

21mm

Crystal

Hardlex

Bezel

Rotating

Water Resistance

80m

Dial Color

Burgundy

Jewels

21j

Frequency

36,000 bph

Power Reserve

49 hours

Year

1971

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