Seiko Cal. 5628 - 278

The 5628-278 is a sought-after Spring Drive piece from Seiko's golden era. Powered by the 5628 caliber with 20j jewels beating at 21,600 bph, it delivers a 67 hours power reserve. [seikata-wm-c5e297d7a237]

Also known as: Monster, Sea Horse

Specifications

Movement

Spring Drive

Case Material

Two-Tone

Case Width

35mm

Case Thickness

12.6mm

Lug Width

19mm

Crystal

Mineral

Bezel

Rotating

Water Resistance

150m

Dial Color

Black

Jewels

20j

Frequency

21,600 bph

Power Reserve

67 hours

Year

1978

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